HORTICULTURAL RESEARCH STATIONS Great Britain.—Many European and American countries have recently established special research stations for the study of some special horticulture crop. In England the following are important : Cambridge University Horticultural Station.—This was estab lished in 1924 under the direction of Sir R. H. Biffen for special research into vegetable crops.
Chesliunt Experimental and Research Station.—Started in 1915 by growers' associations, the station carries out research and experimental work concerning the production of glass-house crops. Much research work in tomato, cucumber and chrysanthemum culture has been done and papers published.
East Mailing Horticultural Research Station.—Started in this station now has extensive laboratories and over one hundred acres of land. Pomology, pathology and plant pests and hop cul ture have been made special features for study. The station's work on the vegetative propagation and standardisation of root stocks for fruit tree culture is known the world over.
John Innes Horticultural Institution.—This institution primarily concerns itself with pure research, genetics and plant breeding. Fruit, flower and vegetable breeding has been done and pollination questions studied.
Long Ashton Research Station.—Started nearly thirty years ago as the National Fruit and Cider institute, the station has much developed its work on cider-making and taken up research in fruit culture generally. The fruit lands exceed two hundred acres. Cider making, fruit nutrition and pathology are important subjects.
United States.—In the United States, the stations dealing with horticultural research are very numerous. That of New York State at Geneva has a world wide reputation primarily for its pomological work, and for the reports which give a complete classified and described list of fruits. In California, at the uni versity and at the experimental farm at Davis, much good work is done. Cornell university and the State universities of Oregon, Washington, Michigan and Pennsylvania have experimental farms and extension plots.
In Canada experimental work is being undertaken at the Dominion experimental farms at Ottawa where are located the offices of the Dominion horticulturist. Linked up with this work are the branch farms and stations located in every province in Canada. In New Zealand, Australia and South Africa research departments have recently been created.
At intervals of from about three to five years, international horticultural congresses are held at which papers are read, discus sions held and demonstrations made. In 1920 the first was held in the Netherlands. In 1927, a second was held at Vienna (Aus tria), following which arrangements were made to hold a third in London in 193o. Such congresses are planned and arranged by an international committee consisting of members nominated by the Governments of Austria, Belgium, England, France, Ger many, Hungary, the Netherlands, Poland and Switzerland. Other countries have been invited to appoint representatives. In 1928 Dr. M. J. Sirks of Wageningen (Holland) was acting as secretary to the international committee. At the 1927 conference in Vienna there was some discussion in favour of establishing an interna tional bureau for horticulture, a matter referred for considera tion to the international committee.
(b) England, Canada and New Zealand have horticultural councils which have been officially set up and recognised as the proper bodies to give advice to the Government on horticultural matters. The Horticultural Advisory Council of England, which has been set up by the Ministry of Agriculture, is composed of members representing the Government, the scientific research workers, amateur horticulturalists, commercial growers and dis tributors with the Government horticulture commissioner as chairman. The Council holds not less than two meetings each year.
The Canadian Horticultural Council was formed in 1922. It consists of officers nominated by fruit growers, distributors, jam manufacturers and canners, together with officials from the De partment of Agriculture. The Canadian Horticulture Review is published by the Council.
As to (c) horticultural traders in many countries have formed associations mainly for the purposes of local trade protection. By arrangement between the Horticultural Associations of Bel gium, France, Great Britain, Holland, Luxemburg, an international body known as the Federation Horticole Pro f essionnelle Inter nationale has been established (general secretary, M. Turbat, Orleans, France). This international body holds annual meetings in rotation in the different countries. The F.H.P.I. deals only with horticultural matters as affecting international trade. BIBLIOGRAPHY. W. Robinson, Alpine Flowers; Lord Redesdale (A. B. Freeman Mitford), The Bamboo Garden; J. Weathers, Bulbous Plants (33 col. plates) ; H. H. Cousins, Chemistry of the Garden; W. Watson, Cactus Culture for Amateurs; R. P. Brotherston and M. R. Smith, Book of the Carnation; J. Weathers, Cottage and Allotment Gardening; J. Veitch and Sons, Manual of Coniferae; W. Wells, Culture of the Chrysanthemum; Rev. S. E. Bourne, Book of the Geo. Nicholson, Dictionary of Gardening (5 vols.) ; W. Robinson, The English Flower Garden; Geo. Schneider, Book of Choice Ferns (3 vols.) ; W. Robinson, Flora and Sylva (3 vols.; col. plates by the late H. G. Moon) ; J. Weathers, Flowering Trees and Shrubs (33 col. plates) ; J. Weathers, French Market-Gardening and Intensive Cultivation; T. Smith, French Gardening; Geo. Bunyard and O. Thomas, The Fruit Garden; Josh. Brace, Fruit Trees in Pots; Dr. R. Hogg, The Fruit Manual; M. C. Cooke, Fungoid Pests of Cultivated Plants; Thos. H. Mawson, The Art and Craft of Garden Making; J. Weathers, A Practical Guide to Garden Plants; W. Watson, The Gardeners' Assistant; C. H. Wright and D. Dewar, The Gardeners' Dictionary; J. Weathers, Garden Flowers for Town and Country (33 col. plates) ; Chas. Baltet, The Art of Grafting and Budding; W. Thomson, The Grape Vine; Thos. Baines, Greenhouse and Stove Plants; R. Irwin Linch, The Book of the Iris; G. Jekyll, Lilies for English Gardens; E. A. Ormerod, Manual of Injurious Insects; Dr. A. B. Griffiths, Manures for Fruit and other Trees; F. W. Burbridge and J. G. Baker, The Narcissus (48 col. plates) ; H. A. Burberry, The Orchid Cultivator's Handbook; B. S. Williams, The Orchid Grower's Manual; J. Veitch and Sons, Manual of Orchidaceous Plants; Dr. Paul Sorauer and F. E. Weiss, Physiology of Plants; W. Watson, Orchids, their Culture and Management; G. Massee, Plant Diseases; Rev. A. Foster-Melliar, Book of the Rose; Wm. Paul, The Rose Garden (20 col. plates) ; G. Jekyll and E. Mawley, Roses for English Gardens; J. Weathers, Roses for Garden and Greenhouse (33 col. plates) ; Nat. Rose Society, Handbook on Pruning Roses, Rev. J. H. Pemberton, Roses, their History; Development and Culture; Very Rev. Dean Hole, A Book about Roses; J. Hoffmann, The Amateur Gardener's Rose Book (20 col. plates; translated from the German) ; A. Gaut, Seaside Planting of Trees and Shrubs; E. Beckett, Book of the Strawberry; W. Iggulden, The Tomato; J. Weathers, Trees and Shrubs for English and Irish Gardens (33 col. plates) ; Vilmorin et Cie, The Vegetable Garden (Eng. ed. by W. Robinson) ; A. F. Barron, Vines and Vine Culture; G. Jekyll, Wall and Water Gardens; W. Robinson, The Wild Garden; L. H. Bailey, Practical Garden Book (New York, 1908) ; F. V. Theobald, Insect Pests of Fruit (1909) ; Mrs. E. Cecil, A History of Gardening in England; E. A. Bowles, Crocus and Colchicums; W. R. Dykes, Iris, The Genus (1925) ; The Handbook of the Garden Iris (1925) ; Reginald Farren, The English Rock Garden, 2 vols.; W. J. Bean, Trees and Shrubs Hardy in Great Britain, 2 vols. (1914) ; Rhyder, Cultivated Trees and Shrubs Hardy in North America (1924) ; Suttons' and Sons, The Culture of Vege tables and Flowers from Seeds and Roots (192 1) ; M. M. Vilmorin and Andricua (English Edition, W. Robinson), The Vegetable Garden (1920) ; H. C. Thompson, Vegetable Crops (1923) ; W. F. Bewley, Glasshouse Plants (1923) ; U. P. Hedrick, Cyclopedia of Hardy Fruits (1920) ; E. A. Bunyard, Handbook of Hardy Fruits, Apples and Pears (1920) ; Stone and Bush Fruits (1925) ; P. J. Fryer, Insect Pests and Fungus Diseases of Fruit (1920) ; U. R. Gardner, F. C. Bradford and H. S. Hooker, The Fundamentals of Fruit Production (1922) ; L. Lorette, translated by W. R. Dykes, The Lorette System of Pruning (1925). See also L. H. Bailey, The Standard Cyclopedia of Horticulture (1914-25) and Manual of Cultivated Plants (1924). (H. V. T.) Flower Garden and Greenhouse.—Little is to be done in either. In the greenhouse care must be used to protect against frost. Ventilate little, and with care; raise the ventilating sash only high enough to let the heated air from the greenhouse drive back the outer air so as not to chill the plants. To destroy the red spider, syringe the plants copiously at night, and splash the paths with water. The aphis, or "green fly," must also be destroyed ; tobacco may be used. Various new preparations are coming on the market for the destruction of greenhouse pests. Several new effec tive preparations of tobacco have been brought into use. The white-fly is now a common pest in greenhouses, the nymphs being greenish scale-like objects on the under sides of the leaves, and adults very small white flies. The remedy is to spray with kerosene emulsion or whale-oil soap ; or, if on cucumbers or tomatoes, it is best to fumigate with hydrocyanic acid gas, using I oz. of potas sium cyanide to each i,000cu.ft. of space. (This material is very poisonous.) Many greenhouse insects can be kept more or less in check by careful and effective hosing of the plants at proper times. At this season roses, grape-vines and other plants are often affected by mildew ; an effectual remedy is to paint the hot-water pipes with a mixture of sulphur and lime, put on as thick as ordinary whitewash, once each week until it is checked; but care must be taken not to apply it on any surface at a higher temperature than 212° Hyacinths and other bulbs that have been kept in a cellar or other dark, cool place may now be brought into the light of the greenhouse or sitting-room, provided they have filled the pots with roots. If they are not well rooted, leave them until they are, or select such of them as are best, leaving the others. In the out side flower garden little can be done except that shrubs may be pruned, or new work, such as making walks or grading, performed, if weather permits. See that the ornamental plants and trees are not injured by heavy weights of ice or snow.
In March flower seeds and vegetable seeds may be sown in boxes or flats in the greenhouse, or in residence windows, or near the kitchen stove. Unless one has space under glass, or in hotbeds, in which the plants may be transplanted before they are set in the open ground, it is well not to start the seeds too early, inasmuch as the plants are likely to become too large or to be pot-bound, or to become drawn.
Pelargoniums, pinks, monthly roses and all half-hardy flowering plants should be planted early, but coleus, heliotrope and the more tender plants should be delayed until the end of the month. An nuals that have been sown in the greenhouse or hotbed may be planted out, and seeds of such sorts as mignonette, sweet alyssum, Phlox Drummondii, portulaca, etc., may be sown in the beds or borders. The china aster is now one of the most popular of sum mer and fall plants. The seed may be sown in the north as late as the middle of May, or even the first of June, with good results for fall blooming. If the plants are started early in the greenhouse, they are likely to spend themselves before fall, and theref ore a later sowing should be provided.
Fruit Garden.—The hay or leaf mulching on the strawberry beds should be removed and the ground deeply hoed (if not re moved in April in the more forward places) , after which it may be placed on again to keep the fruit clean and the ground from drying. Where it has not been convenient bef ore, most of the smaller fruits may yet be planted during the first part of the month. Tobacco dust will dislodge most of the numerous kinds of slugs, caterpillars or worms that make their appearance on the young shoots of vines or trees. Fruit trees may be planted this month, if not planted in March or April. If they have been kept fresh and dormant, they should still be in good condition. The broken roots should be cut back to fresh wood, and the tops headed back in proportion.
Vegetable Garden.—Attention should be given to new sow ings and plantings for succession. Crops sown last month will have to be thinned out if large enough. Hoe deeply all transplanted crops, such as cabbage, cauliflower, lettuce, etc. Tender vege tables, such as tomatoes, egg and pepper plants, sweet potatoes, etc., can be planted out. Seeds of Lima beans, sweet corn, melon, okra, cucumbers, etc., should be sown; and sow for succession peas, spinach, lettuce, beans, radishes, etc., every ten days.
Flower Garden and Greenhouse.—Tropical plants can now be used to fill up the greenhouse during the summer months. The house should be well shaded ; specimens of fancy caladiums, dracaenas, coleus, crotons, palms and ferns and other plants grown for the beauty of their foliage will make a very attractive show. If these cannot be had, common geraniums may be used. The "moss culture" will be found particularly valuable for these plants. Hyacinths, tulips and other spring bulbs may be dug up, dried and placed away for next fall's planting, and their places filled with bedding plants, such as coleus, achyranthes, pelargo niums, and the various white and coloured leaf plants. It will be necessary to mow the lawn once a week, and sometimes oftener.
Fruit Garden.—The small fruits should be mulched about the roots, if this has not yet been done. If the fruit garden is large enough to admit of horse culture, it is best to keep the bush-fruits well cultivated during the season ; this tillage conserves the mois ture and helps to make a full and plump crop of berries. In small areas the mulching system is sometimes preferable.
Vegetable Garden.—Beets, beans, carrots, corn, cucumbers, lettuce, peas and radishes may be sown for succession. This is usually a busy month, as many crops have to be gathered, and, if hoeing is not promptly seen to, weeds are certain to give great trouble. Tomatoes should be tied up to trellises or stakes if fine flavoured and handsome fruit is desired, for if left to ripen on the ground they are apt to have a gross earthy flavour.
Flower Garden and Greenhouse.—Watering, ventilating and fumigating (or the use of tobacco in other forms for destruction of aphides) must be attended to. The atmosphere of the green house must be kept moist. Watch the plants that have been plunged out-of-doors, and see if any require repotting. All plants that require staking, such as dahlias, roses, gladioli and many her baceous plants, should now be looked to. Carnations and other plants that are throwing up flower stems, if wanted to flower in winter, should be cut back, that is, the flower stems should be cut off to perhaps five inches from the ground.
Vegetable Garden.—The first ten days of this month will yet be time enough to sow sweet corn, beets, lettuce, beans, cucumbers and rutabaga turnips. Such vegetables as cabbage, cauliflower, celery, etc., wanted for fall or winter use, are best planted this month, though in some sections they will do later. Keep sweet potatoes hoed to prevent the vines rooting at the joints.
Flower Garden and Greenhouse.—But little deviation is required in these departments from the instructions for July. See that sufficient water is applied; the walks may be wet in the houses.
Fruit Garden.—Strawberries that have fruited will now be making "runners," or young plants. These should be kept cut off close to the old plant, so that the full force of the root is expended in making the "crowns" or fruit buds for next season's crop. If plants are needed for new beds, only the required num ber should be allowed to grow, and these may be layered in pots as recommended in July. The old stems of raspberries and black berries that have borne fruit should be cut away, and the young shoots thinned to three or four canes to each hill or plant. If tied to stakes and topped when 4 or 5 ft. high, they will form three or four branches on a cane, and will make stronger fruiting plants for next year.
Vegetable Garden.—Hoe deeply such crops as cabbage, cauli flower and celery. The earthing up of celery this month is not to be recommended, unless a little very early supply is wanted. On ions in many sections can be harvested. The proper condition is when the tops are turning yellow and falling down. They are dried best by placing them in a dry shed in thin layers. Sow spin ach for fall use, but not yet for the winter crop. Red top, white globe, and yellow Aberdeen turnips should now be sown ; ruta baga turnips sown last month will need thinning, and in extreme southern States they may yet be sown.
Flower Garden and Greenhouse.—The flower-beds in the lawn should be at their best. If planted in "ribbon lines" or "massing," strict attention must be given to pinching off the tops, so that the lines or masses will present an even surface. Tender plants will require to be put in the greenhouse or housed in some way towards the end of this month; but care should be taken to keep them as cool as possible during the day. Cuttings of bedding plants may now be made freely if wanted for next sea son, as young cuttings rooted in the fall make better plants for next spring's use than old plants, in the case of such soft-wooded plants as pelargoniums, fuchsias, verbenas, heliotropes, etc. ; with roses and plants of a woody nature, however, the old plants usually do best. Dutch bulbs, such as hyacinths, tulips, crocus, etc., and most of the varieties of lilies, may be planted. Violets wanted for winter flowering will now be growing freely, and the runners should be trimmed off. Sow seeds of sweet alyssum, candytuft. daisies, mignonette, pansies, etc. Visit the roadsides and woods for interesting plants to put in the hardy borders.
Fruit Garden.—Strawberry plants that have been layered in pots may yet be planted, or in southern districts the ordinary ground layers may be planted. The sooner in the month both are planted the better crop they will give next season ; and, as these plants soon make runners, it will be necessary to trim them off. Attend to raspberries and blackberries as advised for last month, if they have not already been attended to. All fruit trees should be gone over for borers before cold weather sets in ; they also should have been gone over for the same purpose in May and June.