WEIGELA ROSEA. 
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terminations of the branches ; their colour is a pale rose. As it respects the culti- 
vation of this desirable genus, A. floribunda "requires a treatment intermediate 
between the stove and greenhouse ; that is to say, during the growing season it 
requires to be treated like a stove plant and kept rather moist, but afterwards, when 
the flowers are over, it should be transferred to the greenhouse. It grows freely in 
a mixture of sandy loam, peat, and leaf-mould, and strikes freely from cuttings." * 
A. rupestris " has hitherto been treated as a greenhouse plant, but will probably 
prove hardy enough to stand out of doors in mild winters. The soil which appears 
most suitable is rough sandy loam, mixed with a little peat. Being of free growth' 
an ample supply of water is necessary during the summer season. In winter nothing 
different from the general treatment of greenhouse plants is required. It is propagated 
from cuttings of young wood, in the usual way."f A. triflora will endure about 
the same amount of cold as Rhododendron arboreum, and should therefore be kept in a 
cool airy greenhouse, and be potted in a mixture of equal parts of peat, loam, and sand. 
Alsenosmia. — With this genus we are too imperfectly acquainted to offer any 
remarks on culture. 
Caprifolium. — With the exception of three Chinese species, confusumjaponicum, 
and longiflornm, all are perfectly hardy, and these three exceptions require no more 
than the shelter of a common wall. It is true L. javanicum and L. Loureiri are 
greenhouse plants, but it is not quite certain whether they are yet introduced. All 
the species are ornamental climbers of very easy management, being well suited 
either for covering trellis work, arbours, or training against walls. They will thrive 
in any common light soil, and are increased by cuttings of the ripe wood taken off at 
the close of the summer, and planted in a warm situation on a south border ; the 
tender kinds should have the shelter of a hand-glass. 
Diervilla. — Five species of Diervilla are introduced, four of which, being 
natives of Japan, can be scarcely said to be perfectly hardy ; although they will bear 
a mild winter tolerably well, yet without some slight protection they suffer from 
severe frosts. D. canadensis is a well-known deciduous shrub, growing freely in 
common garden soil, even in the most exposed situations. The other species also 
grow well in any light sandy soil, and are readily increased by cuttings, those of the 
D. canadensis put into the open ground in autumn and spring, after the manner of 
those of Laurels. The cuttings of the other species should be covered with a hand- 
glass. Suckers are also produced in abundance, by which they are likewise produced 
plentifully. 
Karpaton hastatum. — The only known species is stated to be a hardy herbaceous 
plant, from Louisiana, growing in a border of sandy peat earth, and propagated by 
division of the roots. 
* Bot. Reg., t. 55. f Hort. Jour., i. 63. 
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