390 



HORTICULTURE, 



March 20, 190'> 



European Horticulture 



COMING EXllIHITION.S XII IS YIUK IN HOLLAND 



At llillegom, Holland, an exhibition of flowering 

 bulbs will be lield in April and May in the open air. 

 For this purpose, a large beautifully situated terrain, 

 planted by the local bulb growers will be planted with 

 200,000 flowering bulbs. Last year, Sassenheim, near 

 Hilie^om, held a similar exhibition. This year's exhi- 

 bition will be opened on April 8 and will be a much 

 more important one. 



A NKW VAEIETY OF GEKBERA JAMESONI 



We read of a new variety of this highly decorative 

 plant— a native of South Africa— that has been raised 

 by Mr. E. Adnet of Antibes, in Southern France. It 

 is surprising to note how numerous are the varieties of 

 this brilliant South African species, and how the 

 changes in colors vary from orange-scarlet, yellow and 

 white, according to the desire of the hybridist, and flow- 

 ers become larger and longer in the stalk. The largest 

 blooms of Adnet"s raising have a diameter of 13 cm., 

 against 6 or 7 cm., with stalks of ?0-2o cm., less than ten 

 years ago while the stalks of the new Adnet's hybrids 

 measure 50-60 cm. and they are firmer and thicker. 

 Today there is a greater variety of colors than could 

 have been imagined possible a few years ago. These 

 colors range from pale sulplnir yellow and creamy white 

 to full Doronicum yellow ; from a tender rosy peach to 

 salmon pink and scarlet tints, to the deepest clear car- 

 mine; out of fifty varieties scarcely two were exactly 

 alike in their tints. The fonn of the blooms is very 

 varied. It has yet to be proved that blooms are so good 

 for carriage to' distant places ; but should they well 

 withstand the rough handling inseparable from long 

 journeys by road and rail, we shall have flowers that 

 may rank with carnations and roses, and the demand for 

 seeds of Gerbera Jamesoni hybrids will be a lively one. 



HEMIGRAPHIS COLORATA 



This is a reeommendable decorative plant, more par- 

 ticularly for the amateur and private gardener. It has 

 a bushy" habit, a vigorous growth and leaves of a leathery 

 texture, serrated at the edges. The plant requires the 

 temperature of the warm greenhouse, and is suitable for 

 the flower stand, and a striking subject for winter gar- 

 dens and glasshouse decoration. The best kind of soil 

 in which to grow this plant should be a light one. Mr. 

 Heydt states, in "Die Gartenwelt," No. XIII, that he 

 grows his plant in leaf mould, decayed cow dung, and 

 sand intermixed. Liquid manure may be afforded with 

 good effect when in full growth. The older plants are 

 not at all tender, but on tlie contrary the young ones 

 should be kept close and moist, and protected from 

 strong sunshine. Propagation by means of cuttings 

 should be undertaken in the spring, employing a tem- 

 peiature of about 70 per cent. Falir. in the bed. With- 

 out bottom heat, the production of roots is very slow. 



SINGLE FLOWERED CHRYSANTHEMUMS 



As is well known, the nature of the soil and climatic 

 conditions exert great influences on the growth of plants 

 and the chrysanthemum is no exception. A cultivator 

 residing at Frankfurt on the Oder purchased forty va- 

 rieties of single-flowered chrysanthemums in 1906 and 

 1907, of which some have fully grown up to expecta- 

 tions, deserving of the widest cultivation. And of these 

 the names are given in "Die (iartenwelt." Xo. IX. of the 

 present year. Cannell's Yellow is in growth most ex- 

 cellent. " In form and color of the bloom it resembles 

 a large yellow Marguerite. The color is a pure dark 

 yellow, which does not pale with age — not even in pass- 



ing out of i)loom, and its floriferousness leaves nothing 

 to be desired. It makes a good bush and standard. A 

 Icllow plant to this is Freedom which in growth is more 

 vigorous, but the bloom is smaller of a pure white, and 

 very free. It is equally good as a bush and standard. 

 Very acceptable in flowering, pose, and form' is Mrs. F. 

 J. Howarth. of a terracotta tint. It is an excellent 

 flower for filling vases, and makes a pleasing plant in 

 bush form. One of the darkest tint and a late bloomer 

 is King of Siam. a dwarf habit, and bright red. The 

 following three varieties are similar in the form and 

 cdlor of their blooms and only differ in the height to 

 which they grow and their date of flowering : Mrs. Selby, 

 Flossy and Ladysmith. They are of a bright rose tint, 

 and possess healthy foliage and growth. Mrs J. Fer- 

 guson in habit of growth and shape of the flower is sim- 

 ilar to the old Marie Anderson. The tint is a more 

 decided pink, and the plant is earlier in flowering. As 

 a flower for cutting White Swan may be recommended. 

 The flower with its long petals has a good effect. The 

 strong growing Sylvia should not be omitted ; it being 

 a variety which forms a magnificent globular bush, 

 thickly set with blooms, the color of which is like that 

 of Ada Owen, but it is larger. For these single flowered 

 chrysanthemums pot culture is to be preferred. 



JA.SMINDM PRIMULINUM 



This Chinese species is a bright, interesting plant 

 now in flower in the Kew Botanic Garden. The long' 

 pendulous shoots are thickly furnished with semi-double 

 yellow flowers. The best way to grow this plant is to 

 place it in the open, in full sunshine in the summer- 

 time, and every encouragement afforded to secure well 

 matured growth. The plant may be gently forced in a 

 minimum warmth of 40 degrees Fahr till January. 

 More warmth develops wood-growth instead of flowers. 

 A plant new to gardens is Erlangea tomentosa belong- 

 ing to t'ompositae. It is a native of British East Af- 

 1 ica. The flowers are like those of a Eupatorium and 

 aie of a heliotrope color. The plants are about three 

 feet high, and the leaves are of a silvery white color. 

 Heristrophe speciosa is a good cool greenhouse plant. 

 Freely producing carmine purple flowers for a period of 

 three months. 



PBIMl'LA OBCONICA GRAXDIFLORA IN THE OPEN AIR 



Usually the gardener, after flowering his plants of 

 Primula obconica. throws them on the rubbish heap. 

 But when it becomes known that these easily grown 

 l^lants. which flower so abundantly during the winter 

 months can be made to flower with equal freedom in the 

 summer, the gardener will do so no longer. There can 

 bo found in every garden much shaded spots, or ground 

 full of the roots of trees and shrubs, in which summer 

 flowering plants of the most modest requirements in 

 regard to soil and position will not succeed. For such 

 parts of a garden, as likewise edging for groups of 

 shrubs, and under thinly planted shrubs and trees and 

 liare parts of a rockery. Primula can be piit to a use- 

 ful purpose. The plants should be set out in the spring, 

 at the same time placing a small quantity of fresh soil, 

 containing peat and light turfy loam, or even spent 

 ])otting-bench soil, failing those. After planting, the 

 plants should then be heavily watered, and occasionally 

 as may be required during dry, hot weather. Some- 

 times these out-of-doors plants produce a number of 

 large developed specimens, which, if taken up with 

 care and potted, afford in the following winter a quan- 

 tity of long stalked corj'mbs, excellent material for cut- 

 ting. 



