Historic, Archive Document Do not assume content reflects current scientific knowledge, policies, or practices. "Business Terms and Suggestions READ BEFORE ORDERING ORDER EARLY. Since, in our section, practically an entire year’s nursery business must be handled during six weeks in the spring, the congestion in our order department is at that time very heavy. To enable us to give the best attention to your orders, we ask that you cooperate by ordering early. CATALOGUE PRICES, as listed on separate folder at the back of this book, are F. O. B. Saint Paul. No charge for packing. TERMS. Cash must accompany order, as we do not ship C. O. D. unless remittance has been made to guarantee acceptance. CREDIT. If credit is desired, give business references and allow time for us to look them up. All accounts are due and payable by the i oth of the month following receipt of stock. SHIPPING INSTRUCTIONS. Please advise when ordering, if you want goods shipped by express or freight, giving best route for quick delivery. When not instructed otherwise, we will use our best judgment. OUR RESPONSIBILITY. We endeavor to give the best possible service in carefully filling orders and packing stock. We endeavor to keep varieties true to name, but do not guarantee this nor do we in any way guarantee the success of the grower purchasing stock offered in this catalogue. All shipments become the property of the consignee upon their delivery to the transportation company, and we cannot be respon- sible for loss, damage, or delay in transit. REPLACING. While we do not hold ourselves responsible for a pur- chaser’s success with any of our stock, yet we will agree to replace, at one-half of the current “each” price, any of the stock that fails to grow the first season after being properly planted and cared for. This offer is made with the understanding that the account be promptly paid in full. Any labor involved in planting such replace orders is to be charged in full to the customer. CORRESPONDENCE is solicited and every inquiry is given prompt and personal attention. Our Landscape Service Department will advise you regarding all matters of planting. See pages 2 and 3. Special cata- logues are published for spring Bedding Plants and for Fall Bulbs. •Trustworthy iTrees & Plants Members , American Association OF NURSERYMEN Copyright, 1921 , by Holm & Olson, Inc. / ©CIA608770 JAN 21 1921 Holm Olson Inc Landscape Gardeners and Nursorymei l-M.Tjr . Entrance planting at home of Dr. A. J. Gillette. Dellwood. Minn. Our Landscape Department will aid you to get the same pleasing results on your own grounds through individual service and practical help. Pages 2 and 3 explain our Landscape Service. A pleasing and practical solution of the front terrace problem. Home of Mr. Geo. McLeod, St. Paul The Tark Nurseries and Landscape Serb ice The Park Nurseries were founded primarily to furnish the residents of the Twin Cities with the means to make their home grounds beautiful; and, secondly, to afford our citizens an opportunity of consulting with skilled landscape designers and plantsmen who, by reason of training and experience, are able to give intelligent advice to all who are interested in ornamental plantings. VALUE OF PLANTINGS It is not necessary to urge a home-owner to put a little effort and reasonable expense into beautifying his residence grounds, for the benefits are too apparent. A well-kept and beautiful yard is as much to be desired as good pictures or tasteful in- terior decorations. Our desire in issuing this cata- logue, and in the whole conduct of our business, is to be of the utmost service in helping the citizens of the Northwest make these improvements in the most practical, artistic, and economical way. Many home-owners have taken advantage of the facilities we offer, and today their homes are not only a source of personal pride and daily enjoyment to both themselves and all who see them, but the values of their properties have been increased by many times the original cost of the improvements. COMPLETE LANDSCAPE SERVICE The Holm and Olson Service is far more complete than that ordinarily found. One may find a land- scape designer to make sketches and plans, but must then find a nursery to supply the plants, get someone to move them, and another party to attend to the planting. The evident result of this is divided responsibility with no one reliable party to be accountable for the entire work and results. The Holm & Olson Service assumes the complete con- tract. We plan and design your grounds, furnish the plant material grown in our own nurseries, and supply a competent Landscape Gardener to super- intend the plantings. The responsibility for the success of the work then rests entirely with us. The photographic illustrations in this book — actual re- sults of “H. & O. Service” — go to prove the* value of carefully planned plantings. THE LANDSCAPE PLAN In order to secure the most attractive results in beautifying a property and to enable one to make the improvements in a logical and economical manner, a carefully prepared plan, with specifica- tions, should be made for the work. Such a plan embodies the results of a study of the physical characteristics of the grounds and considers the exposure, grading required, soil qualities, existing trees, surrounding properties, etc. A study of the architecture of the house or buildings upon the property is also made so that the grounds will be in keeping with the style and appearance of the buildings. To make the plan more personal and the grounds, when developed, more useful and livable, careful consideration is given the owner’s ideas as to the purposes and uses to which he will put the property. With such a comprehensive plan to follow, the owner is certain that every dollar spent for the work is properly placed to get best results and that the entire improvement will be one suited to the appear- ance and situation of the house. The work of im- proving, even if spread over several seasons, is then all along a definitely planned outline that is certain to give a finished whole, and is sure to be more satis- factory than when the work is performed in a haphazard fashion. We are able to give professional landscape archi- tectural advice and make plans for any character of ground improvements. Parks, cemeteries, school- grounds, factory yards, club-house surroundings, golf-courses, and real estate subdivisions, etc., all need careful and comprehensive planning. Our land- scape designers are experienced men and. can give valuable service on all such problems. Ml [I mini I ii i . la 91 ill llB i ■ .IBM 311 ill THE COST OF PLANNING The cost of plans for home-grounds is based on percentage charge — 15 per cent when the nursery material costs $100 or less; 10 per cent when the material amounts to over $100. For example: When the material for planting the grounds amounts to $150, the plans will cost $15, payable by the 10th of the month following. When the material is pur- chased, credit will be given for the amount of the plans or the portion which has been ordered. We have landscape architects who are constantly on the road, making calls and looking after work under construction. If you write us, we will try to arrange a call when a landscape architect is in your section. Please notify us as far in advance as possible. Special service of a landscape architect costs from $15 to $25 per day and his expenses, when it is necessary to make a visit. All plans where planting material is not needed will be charged for the time of service in working out the drawings, such as grad- ing plans, walls, buildings, cemeteries, pergolas, pools, etc., or where grounds are to be replanned, using material on grounds. Men for superintending plantings will be furnished as far as we are able to supply them under existing conditions, and prices will be quoted for such service. COST OF MATERIAL We grow our own planting material in our own nurseries, and know just what is hardy. This in itself is worthy of your consideration — to know you will get just such varieties as will do best. Our stock is grown especially for our landscape plantings and is much better in quality than that usually sold; further, our specialty is ornamental nursery material. For our terms, see inside front cover. VISIT OUR NURSERIES Come to the Park Nurseries and see the stock as it stands in the nursery row. You will find a larger list of varieties from which to select than in any other nursery in the West. When you see a plant that you like, have our Superintendent, who con- ducts you, tag the specimen. When planting-time comes, it will be properly dug and delivered to your grounds. The Nurseries, at Lexington and St. Clair Ave- nues, St. Paul, are easily accessible from both of the Twin Cities, either by motors or street-cars. For information, call at our downtown office, only a few doors from the St. Paul Hotel. 3 Country home of Mr. H. E. Smith at White Bear Lake ORNAMENTAL TREES A few good trees and an even, luxuriant lawn are the two real essentials for beauty and comfort on the home-grounds. Since the trees require several or more seasons to become well established, it is important for the home-owner to get them planted on the property as soon as possible. The opportunity given by the year’s rather short planting season should be taken advantage of. Location The number of trees to use is determined by the size of the property but every lot needs a tree or two placed at the sides and rear of the house where their shade and protection will be most inviting. Here, too, their foliage will form a framework and background in which the building will seem to nestle. Groups of trees of three or four or more are pleasingly located, for beauty and utility, toward the sides of the larger lawns. Such irregular groups are preferable to a straight-row arrangement. A city lot will have a boulevard space where such sturdy varieties as the Elm, Ash, and Basswood are desirable. Here the tall-growing trees should not be set closer than 30 feet and should line up with others planted on the same block. Selection There are trees of varying characteristics of height, spread, foliage and adaptability to fit special loca- tions and exposures, and to give desired effects. For shade and general beauty, the Elm, Maple, Ash, Oak, Basswood, and Hackberry are valuable; for special beauty of form, the Birch, Wier’s Cut-leaf Maple, and Niobe Willow; for bloom, the Mountain Ash, Catalpa, Horse-Chestnut, and Flowering Crab; for colored foliage, the purple-leaved Schwedler’s Maple; for screening and sky-lines, the perpendicular-growing Lom- bardy and BoIIeana Poplars. Our Landscape Department is always at your service to advise you about a suitable selection and the number required to fit your needs and get the effects you desire. Planting After setting the tree in a hole much larger than the actual spread of the roots, carefully lay the roots in their natural directions and fill in with good garden soil. When the hole is three quarters filled, firm the soil with the feet. Then add water liberally and when this has become absorbed, complete the filling of the hole with soil. Top-pruning is absolutely essential to good growth; the branches should be shortened back about one-third after planting. On poor soil, fertilizing is essential but manure should never be put in the hole directly around the roots. Spread the fertilizer on the soil above, after planting is completed. Complete planting instructions are sent with the acknowledgment of every order. Large Sizes Besides the ordinary planting sizes, we can supply trees of large diameter to give immediate effects. These are “specimen trees” or selections from the rows that have been transplanted from time to time, grown into large sizes, and can be safely moved. A few such “specimen” trees on the new lot will give shade and improve appearances immediately. Current prices of trees of all sizes are given in the price-list attached to this book 4 Trees should be planted to frame in the house and to shade and cool the grounds around it Estate of Dr. A. J. Gillette. Dellwood ACER • MAPLE Few trees are more valuable for decorative effect than the Maples; they enjoy great popularity because of their rounded heads, symmetrical growth, and dense foliage. They have another advantage: a row ot young trees planted at one time will make practically the same growth from year to year and present as uniform an appearance in twenty years as when they were set. For this reason they are largely used for shading avenues, and occasionally for making the boundary-lines for estates. Both Acer tataricum ginnala and A. plalanoides Scbwedleri are largely used in landscape plantings because of their unique qualities, although their uses differ widely. The former is chiefly interesting as a specimen tree, while the latter may be used for shade or as an avenue tree, for which its height and foliage make it eminently suitable. In early spring the purple leaves make a pleasing contrast to the various green tones of other trees, particularly when planted in a conspicuous place. None of the Maples are particular about con- ditions of soil; they will grow successfully almost anywhere. Their roots are rather close to the sur- face, so beds of flowers should not be planted too close to any of them. After the foliage has been nipped by autumn frosts it turns to beautiful red ana brown shades. l P most desirable deciduous trees for either k Taken all in all, Maples are arge or small estates; they furnish impenetrable shade all summer long and are singularly beautiful through the fall. Dasycarpum. Silver Maple. One of the most popular of American Maples, because of its rapid growth, large size, and attractively rounded head, with a tendency to graceful arching when carefully pruned. For immediate effects it is in- dispensable. Foliage is luxuriant, bright green with silvery white beneath. A favorite for any place. 40 to 50 feet. Dasycarpum Wieri. Wier’s Maple. A beau- tiful specimen tree, with delicately cut leaves, and distinct, half-drooping, graceful habit. 40 to 50 feet. Negundo. Asb-leaved Maple. Grows rapidly into a large, spreading tree, 70 feet high, found valu- able for planting timber claims, shelter-belts, etc., in the Northwest as it endures both drought and cold. 30 to 50 feet. Schwedler's Norway Maple, about 20 years old. This variety is more erect in growth than the old Norway Maple 5 ACER, continued Platanoides. Norway Maple. The compact, vigor- ous nature of this European tree renders it desir- able for the street or lawn. The growth is fairly fast, the head massive and rounded, with rich green foliage of broad, palmately Iobed leaves that change to a light yellow in the autumn. A mag- nificent tree for the avenue. 30 to 50 feet. Platanoides Schwedleri. Schwedler s Maple. The Purple Norway Maple’s beautiful leaves attract attention at all seasons, but are especially fine in spring, when their gleaming red and purple tones contrast brightly with the delicate green of other trees. Beautiful as a specimen tree, and equally desirable for planting among evergreens and trees with contrasting foliage. 30 to 50 feet. Saccharum. Sugar Maple. The Rock or Sugar Maple is one of the most symmetrical and well- rounded trees native to America. A straight grower, vigorous, stately, inclined to form a spreading head when given plenty of room. A regal tree for the avenue, a lifelong friend on the home-grounds, and a specimen for the parks. Deeply Iobed dark green foliage, changing to orange and red tints in autumn. 40 to 60 feet. Tataricum ginnala. Tartarian Maple. Dwarf. An interesting little tree from southeastern Europe, with rounded crown of irregular growth, and small, three-Iobed, light green leaves, some- what like the gray birch. The bark is smooth and light gray-colored when young. Hardy, easily transplanted and free from insects and fungus. Brilliant red foliage in autumn. Worthy of a place in every garden or park because of its individuality; its characteristics are quite dis- tinct. 20 feet. Cut-leaved Weeping Birch ZESCULUS • HORSE-CHESTNUT Glabra. Horse-Chestnut; Ohio Buckeye. A stronger and more rapid grower than either of the other two varieties. Leaves are less apt to “brown” after midsummer. 15 to 30 feet. Hippocastanum. White Horse-Chestnut. A well- known tree with an abundance of white, fragrant flowers in May, produced in erect spikes. As a lawn tree of special beauty it has no superior. 30 to 40 feet. Carnea. Red Horse-Chestnut. A small-sized tree, producing dark red flowers a little later than the preceding; the leaves are of a darker green. 20 to 40 feet. ALNUS • ALDER Glutinosa. European Alder. Foliage roundish, wedge-shaped, wavy. Quick grower. 50 to 70 feet. BETULA • BIRCH Although planted chiefly because of the bark, trees of this class should enjoy greater popularity through their pretty lines and delicate foliage. All have white or cream-colored bark, which makes a pleasing contrast to the dark trunks and limbs of most other trees. In addition, their shape fits them to certain uses in home planting; they are about half-way between the poplars and maples — not so thin as the former, and not so round-headed as the latter. Birches should be largely used for specimens, and for planting among clumps of other deciduous trees and evergreens. As a specimen tree for lawn planting, we recom- mend particularly Laciniata. A full description is given in our list, but no words can convey a faithful picture of its beauty. The leaves are hung on such delicate stems that they are set in motion by the slightest breeze. If your ground is unusually poor, plant Alba, as it will grow in poor soil. However, any of the Birches are excellent; no estate is too small for a few; most grounds should have many more. Alba. European WhiteBirch. Our native Birch; com- mon along every roadside. Its white bark makes it attractive and effective in groups. 60 feet. Laciniata pendula gracilis. Cut-leaved Weeping Birch. One of the most beautiful and desirable trees for the lawn, with delicately cut foliage. The bark is silvery white, forming a beautiful contrast with the foliage. It makes a rapid growth, and is perfectly hardy everywhere. Mr. Scott, in his “Suburban Home Grounds,” says of it: “No en- graving can do it justice; like the palm trees of the tropics, it must be seen in motion — swaying in the lightest breeze, its white bark glistening through the bright foliage and sparkling in the sun — to enable us to form a true impression of its character.” 30 to 50 feet. Lenta. Black Birch. Yellowish gray bark, which peels off in layers; young stems have spicy taste and odor. 50 to 60 leet. Papyrifera. Paper or Canoe Birch. The brilliant white bark is wonderfully effective, particularly in winter and when planted against evergreens. 50 to 60 feet. CASTANEA • CHESTNUT Americana. American Chestnut. This native tree is a rapid grower. Should be closely pruned when transplanted. Not advisable for north Minnesota or exposed positions. 60 to 80 feet. 6 CATALPA Bungei. Dwarf. The trees grow 10 to 12 feet high and the heads when grown are about 12 feet across. They assume this shape without any trimming. The foliage is deep green, forming a beautiful roof of leaves. Speciosa. Western Catalpa. Well adapted for forest and orna- mental planting. The coarse-grained, soft wood is durable, and useful for railroad ties, fence-posts, etc. Blooms earlier than the other varieties of Catalpa and grows to be a large tree, often becoming 70 feet high. In late summer, its great crop of long, narrow “beans” is very effective; the pods usually hang on the tree all winter. CERASUS • CHERRY Padus flore-pleno alba. European Cherry. In May it is covered with double blossoms, resembling roses. 20 to 30 feet. Serotina. American Bird Cherry. A very hardy native Min- nesota forest tree. Valuable for lawn and shade plantings Its flower-racemes are white and fragrant; its leaves glossy and fruits black. 40 to 60 feet. FRAXINUS • ASH Americana. American White Asb. Our forest tree, tallest of the species, growing to 80 feet high, with straight, clean trunk, smooth gray bark and glossy leaves. Useful for parks and streets. Young Catalpa, Specimen Trees GINKGO (Salisburia) Maidenhair Tree Biloba. A peculiar tree both in its habit and foliage. Its leaves resemble those of the Maidenhair Fern. Its branches are rather upright but, as the tree ages, develop fully. Remarkably free from dis- ease and insect attacks. 50 to 60 feet. GYMNOCLADUS • COFFEE TREE Canadensis. A fine, native tree of rapid, upright growth, with large compound leaves and interest- ing fruit-pods. 60 to 80 feet. JUGLANS Cinerea. Butternut. This lofty, spreading tree is valued for its tropical appearance, beau- tiful wood, and its nucs, which are large, oily and nutritious. 70 to 90 feet. Nigra. Black Walnut. No grander tree in Amer- ica. Lofty height and shapely crown, with beautiful compound foliage consisting of thirteen to seventeen leaflets. Trunk well rounded. Bark dark and deeply ridged. Be- coming rare because of value of its wood. Bears large, edible nuts. Conspicuously ornate and useful for lawn or park planting. Occasionally reaches 100 feet. LARIX • LARCH Europaea. European Larch. An excellent, rapid-growing, pyramidal tree, compact in growth; small branches with light green foliage, drooping in habit. 30 to 40 feet. MORUS • MULBERRY Alba tatarica. Russian Mulberry. A rapid- growing tree; bears well; fruit sweet, vari- able in size and color; leaves dark green and of different shapes; some are birch-shaped, others cut and notched as much as any of our oaks. Will stand almost any amount of drought. 20 to 30 feet. Alba tatarica pendula. Teas’ Weeping Mul- berry. We cordially recommend this as one of the thriftiest, hardiest and most beautiful of weeping trees. Grafted on a straight stem, 6 to 8 feet high, its branches sweep the ground, forming a beautiful tent of green; it forms a delightful play-house for the children. The leaves are distinctly Iobed, much like the typical Mulberry leaf. The American White Ash makes a majestic tree 7 Showing a practical use of Lombardy Poplars to screen unsightly views POPULUS • POPLAR Especially desirable for quick effects. All varieties make an extremely rapid growth, even under unfavor- able conditions, and are largely planted for temporary effects. On large estates they may be placed at irregular intervals, usually in clusters of two or three, where they produce a bold and startling effect by towering in narrow columns far above the maples and beeches. For the small estate, Poplars are usually a nuisance unless they are removed as soon as other permanent trees have grown enough. Poplars will be large trees three or four years after plant- ing, while maples, oaks and elms will still be small. When the latter trees become large enough to furnish shade and to remove every hint of bareness, cut the Poplars down and give the better trees room to grow. The Carolina Poplar will thrive where other trees fail, but it should never be planted where other trees will succeed, as its roots lie so close to the surface that even grass will be thin there, and shrubs usually refuse to grow within the extensive root-radius. Alba. Silver Poplar. A rapid grower, inclined to spread; smooth, gray bark, leaves deeply Iobed, dark glossy green on upper side and snowy white beneath. Desirable for color effects on large estates or parks only, as the roots are inclined to sprout where unattended. Alba Bolleana. Bolle’s Poplar. This splendid upright silver Poplar resembles the Lombardy in growth, but is more desirable, as it is longer- lived. A tree of lofty habits, suitable for tall screening and architectural emphasis. Balsamifera. Balm of Gilead; Balsam Poplar. A handsome native, with thick, dark, ovate leaves, silvery beneath. The flowers come in early spring, in catkin-like form. The spicy gum of the buds is used medicinally. Certinensis. Norway Poplar. This true Russian or Siberian Poplar deserves wider planting. The tree has a strong central trunk, and heavy, dense foliage. Growth is close and erect. The leaves are distinguished by crinkled edges, pre- Bolleana Poplar Senting a Very curious appearance. Lombardy Poplar 8 The grounds about the St. Joseph Academy were treated by the H. & O. Landscape Service POPULUS, continued Fastigiata. Lombardy Poplar. Few trees add so much to a landscape as this European importation. Adapts itself rapidly to all conditions and soils. Leaves serrated, deep glossy green and nearly triangular, tremu- lously nodding with the wind, and borne on erect, long, slender branches. The erect, vigorous and full spiry form of 40 to 60 feet lends a charm and dignity to a street, boundary or landscape, which is inspiring and refreshing, after turning from the monotonous and unbroken outline of many trees. Monilifera. Carolina Poplar. Unexcelled for quick growth and effect, its rapid growth giving an air of luxuriance to places where other trees appear starved. Showy and cheery from the constant movement of its glossy, silver-lined leaves. If well pruned during the first few seasons, it makes a strong, durable tree. 30 to 60 feet. PRUNUS • PLUM Triloba. Double-flowering Plum. A desirable and beautiful flowering shrub coming from China. It resembles the flowering almond in its blossoms, also in the manner in which it blooms. Early in the spring, before its leaves appear, its beautiful, delicate pink petals begin to unfold and soon its branches are a mass of blossoms. 10 to 12 feet. PYRUS • CRAB Angustifolia. Bechtel’s Flowering Crab. Sel- dom over 15 feet high; covered in late spring with myriads of delicate pink flowers, re- sembling the daintiest double roses. Floribunda. Flowering Crab. A distinct and pretty variety, with long, slender branches. Flowers are produced in great abundance, and change from carmine to white when open. Fruit small and ornamental. A splendid early-flowering tree. 15 feet. Parkmanii. Parkman s Crab. It flowers the whole length of the past season’s growth and on the older spurs; rich carmine; double. 8 to 15 feet. Soulardii. Soulard’s Crab. Another beautiful native Flowering Crab. Fruit quite large, keeping until springtime, with a flavor much the same as the quince. 12 to 15 feet. The delicate pink blossoms of Bechtel's Double-Flowering Crab are like little roses 9 American Linden 3-inch transplanted QUERCUS • OAK Oaks are liked chiefly because of their great size and the majestic spread of their limbs. Then, too, they live to great age, and are frequently used as memorial trees on that account. Some of the great Oaks are known to have lived several hundred years, and many others whose records have not been kept are doubtless older. They present a pleasing appearance at all stages of growth, and their dense foliage furnishes good shade. All of them are valu- able for reforestation. In some localities they are planted because of their acorns, which are greatly liked by pigs, and which serve as a fattening food. Alba. White Oak. A well-known, grand, old native tree, with broad, spread- ing head. It grows easily in almost any soil, and, contrary to general belief, does not grow slowly. Seldom requires trimming or attention, and will reach a ripe old age. 80 to 100 feet. Coccinea. Scarlet Oak. There is no better Oak than this variety. It forms a large tree of fine proportions, the large, leathery leaves turning to a fiery scarlet in autumn. A good street tree. 60 to 80 feet. Palustris. Pin Oak. We consider this and Coccinea the best two Oaks. It is distinguished by its elegant growth, the drooping tendency of its limbs, and the fine, deeply cut foliage, which, in the fall, colors brilliantly. Being one of the easiest Oaks to transplant, it is in great favor as a street tree. 35 to 60 feet. RHUS • SUMAC Glabra. Smooth Sumac. Excellent foliage. The flowers are borne in pan- icles at the ends of the branches, and are followed in autumn with prom- inent crimson heads of seed which remain nearly all winter. This Sumac is desirable for massing; the brilliant coloring of the foliage in autumn is especially attractive. 10 to 15 feet. Typhina laciniata. Cut-leaved Sumac. Grows generally in bush form to 10 feet in height; the foliage is compound, light green and of large size; in autumn is brilliantly colored. A most effective plant for grouping in masses; thrives on poor soil. ROBINIA • LOCUST Pseudacacia. Black Locust. A familiar tree of rapid growth, that thrives in any place. The pinnate foliage is light and airy. In June the tree is fra- grant with panicles of white flowers, and highly ornamental. Valuable for planting where quick results are desired. 60 to 80 feet. SALIX • WILLOW Trees of this class will grow well almost any- where, but are particularly adapted to wet soils. Planted along a stream or in low, marshy ground they will make a remarkably rapid growth. Some varieties have showy yellow catkins in the spring, and all of them have narrow leaves. Niobe. Niohe Willow. A golden barked Wil- low of decided weeping habit, yet not a headed tree, as its branches weep from its own stem. This is quite an acquisition to the Northwest, as all the weeping varieties are tender. Professor Hansen, of the South Dakota . Experiment Station, found this variety in northern Europe and gave it its name. The tree is a good grower, and has long, pendulous branches. Pentandra. Laurel-leaf Willow. Grown in tree and bush forms. Highly ornamental, with light brown branches and foliage of deep, glossy green, ovate leaves. Useful for screening and for foliage color effects. Grows rapidly in any soil and especially in . sandy situations. 10 to 20 feet. Vitellina aurea. Golden Willow. For winter effects, the Golden Willow is invaluable. A rapid grower, with branches of rich golden bark. The younger growth produces the brightest wood, hence should be severely pruned. Useful for screen plantings on estates or parks. Niobe Willow growing in The Park Nurseries. readily Such trees transfer 10 SORBUS • MOUNTAIN ASH Americana. American Mountain-Asb. One of our most attractive na- tive trees. Its habit is much the same as the European variety but is much hardier and the bark is lighter in color. It produces its berries when quite young, which are in large clusters and of orange-color. Especially fine for planting among tall shrubbery, with its brilliant beiries. 18 to 20 feet. Aucuparia. European Mountain Asb. Very beautiful, with straight, smooth trunk. Foliage deep green, turning yellow in autumn. Erect growth, 20 to 30 feet high. White flowers in May, followed by bright orange-red berries which cling all winter. Interesting for lawn or park. Aucuparia pendula. Weeping Mountain Asb. The branches of this distinct variety are of a decidedly straggling pendent character, turning and twisting in every direction, each branch apparently struggling to be as different from its neighbor as possible, producing a pleasing effect. Like the other varieties of the family, the tree bears many clusters of bright red berries, which hang all winter. The pinnate foliage is dis- tinctively beautiful. 10 to 20 feet. Aurea. Golden Mountain Asb. A golden-leaved variety; dwarf in growth. An excellent tree for constant color in grouping. 20 to 25 feet. Quercifolia. Oak-leaved Mountain Asb. Of the same fine habit, but with dark, Iobed leaves, downy underneath. 20 to 30 feet. TILIA • LINDEN Americana. American Linden. The Basswood is a native forest tree of unusual, stately beauty. Growth rapid and upright, with smooth branches and broad, heart-shaped leaves; has curiously pendent and cream-colored flowers on long, winged peduncles in July, of delightful fragrance. Few trees equal this, with its rich green foliage and splendid habits of growth, adapting itself readily to various soils and conditions, making it useful for the lawn or street. 40 to 60 feet. Europaea. European Linden. Famous the world over as an avenue tree of great beauty and dignity. It closely resembles its American cousin, with smaller foliage and decidedly more compact growth. The pyrami- dal heads of unusual regularity make it a desirable lawn tree. It grows rapidly, attaining a height of 60 to 80 feet. Foliage is heart-shaped; a deep, rich green, turning to a beautiful yellow and brown in autumn. American Elm 3-inch transplanted ULMUS • ELM Most Elms become very tall, with great spreading limbs. The trees live to a great age and are noted for their graceful and majestic appearance. All of them are excellent for large estates and parks, while in most portions of the North the most popular tree for street planting and for shading drives and ave- nues is Ulmus americana. When poplars are planted for immediate effect, Elms and Oaks should be planted at the same time for permanent growth. Americana. American Elm. The noblest and most dignified tree in the world for the street. Broad, arching branches with splendid dark green foli- age, afford abundant shade. 60 to 75 feet. Huntingdoni (Hollandica vegeta). Huntingdon Elm. Clean, smooth bark; erect stately habit. Not so subject to attacks of insects as some kinds, and one of the best ornamental trees. 40 to 60 feet. Latifolia (Hollandica belgica). Scotch Elm. A grand, spreading tree of rapid growth and variable habit. Attains a height of 60 feet. Glabra Camperdownii. Camper- down Elm. A remarkably pictur- esque weeping tree, that extends its branches horizontally until it forms a complete arbor. It does not grow over 15 feet high, while its branching head often covers 18 feet or more. Few trees equal the American Linden for street planting u The all-yt;ar-aroun