CHE REFERENCE LIBRARY - ZetaTalk

THE N ITRSERY-LIST 341Jasminum (.Jnsmine. ,Jt-assaminc). olfw~r cr.Propagated rcatlily l)y cuttings of nea.rly mature wood underglass in summer ; c also by ripe-wood cuttings t.aken. in autumn, bylayers, a.iid sometimes by seeds sown as soon as ripe.Jatropha. Elr~)ho~bicrc~c~r.Readil?. txised from sr~ls. Propagated also by cuttings fromfirm >*oung wood struck in sand over bottom heat, ; the cuttingsshould be dried somewhat. before setting, as the plants have milkyjuice.Jubea ((“oquit o Palm of Chile) . Z+-dmacm.Propagation is b>- seeds, started in a warm house and kept moist.SW Pulws, page 377.Juglans (iYalnut. and But tcrnut). Juglan.dacrm.All the .ipecies art readily propagatrd b>- mean3 of stratifiednuts. Ilo not allow the nuts to become dry. Artificial crackingshould not be pra.cticed. In stiff soils the seedlings are likely toproduce a long tap-root which renders transplanting difficult afterthe first. ;-car or two. The t.ap-root ma.>? XW cut by a long knifewhile the tree is growing, or t.he j-oung seedling may be transplanted.Particular varieties art‘ perpetuated by graft.ing or budding withany of the common methods ; but the skill of the grafter is moreimportant than the method. In the North, they are sometimesworked indoors in pots. ( ‘ommon shield-budding works well, ifthe sap is flowing freely in the st.oek. Flute-budding is oftenemployed. Tl le improved native sorts are root-grafted in winter.Old trees can be top-grafted like apple t,rees (see page 151). Ifnursery stocks are graft,ed, it is usually best to insert the cionsbelow ground, as for grapes. In all walnut grafting, it is generallypreferred that only one scarf or cut of the cion should traverse thepith. It is important that the cions be kept perfectly dormant.The “ English ” wa.lnut (J. re@) is mostly grown direct fromseed in this country, and the different varieties usually come true.In California, the native walnut (,1. Hindsii and J. cal~fornica) isoften used as a stock for this species, and flute-budding’on branchesa half-inch or more in diameter is ot‘ten ,practiced. Twig- or prongbudding(Fig. 146) is sometimes employed. See bt’alwt.