TREE-PLANTING 253 



plantations and gardens : the alder, ash, beech, 

 birch, horse chestnut, ehn, larch, hazel, hornbeam, 

 lime, maple, oak, poplar, pines, sycamore ("the 

 thronged boughs of the shady sycamore tree" 

 [D. G. Rossettii^, willow, etc. 



Shrubs and trees suitable for training on walls 

 are the following among many others : — Ampelopsis 

 (Virginian creeper), Ga/rrya elliptica, hops, ivies, 

 jasmine, honeysuckle. Magnolia soulangeana 

 (which bears purplish-tinted flowers with white 

 centre), Passiflora ccBrulea, Pyrus japonica. 

 Wistaria sinensis (bearing mauve coloured flowers), 

 clematises, and roses (climbing, such as Banksias, 

 crimson rambler, Gloire de Dijon, etc.). 



All these trees and shrubs for the various 

 purposes mentioned require cultivation and atten- 

 tion, and many trees are failures through want of 

 the proper treatment. The manures and soils 

 most suitable for the growth of trees have already 

 been mentioned in this book, therefore the 

 gardener must determine which species or varieties 

 are suitable to the locality, and the mixing of two 

 or more kinds of trees depends (l) on their relative 

 capacity for preserving or increasing favourable 

 SOU conditions ; and (2) on their relative depend- 

 ence on light and shade for development. The 

 varieties to be mixed should be well chosen, not 



