CHE REFERENCE LIBRARY - ZetaTalk

7’IiE N URSERY-MANCJA Lown a.ccount . The section to which D. nggwgafzm, D. Jcn~kin.sii,1). tl~~siflorlr ~1 anti I>. tIlr~,s,~~~jrz~~~~~~ belong is best propagated bytli\,i.-;ion. SW Or’f*h if/s, IliLgi’ 372.Deutzia. Sa.~*ijrtrgac~cW.(‘ol~l~ll~~rciilll~‘, thy species arc mostly propagated by greenl-lar(-tc~nycl cuttings in summer, under a frame. Hardwoodedcuttings IniLy be taken in aut,umn, and be treated in about theSilnle IVity iIs currant CWttiZ@. The deutzias are also propagated1)). cli\*isions and la>.crs. Some of thr dwarf sorts are sometimesforccfcl, to make cuttings for winter use. They may also be grownfrom setalls sown in pans or boxes in spring.Dewberry (Rubus spetcies). KONNVV.Seeds arc han(llc(I in the saner way a,s blackberry seeds. Increasedby la>*crs an(l, like the t)lackberr>-, root-cuttings and canetips.J,ayers art rlliltlc simply by covering the decumbent canesat the joint.+ hut, this method is now lit,tle used. The tips rootfreely, as in the \,li~ck(~ap raspbcrrics, and it is from these that thecommcrciitl tlewbt2q. plants ure mostly grown. See Blackberry.Dianthus (Carnation. Pink. Sweet M?lliam). Caryophyh~~.Annllnls ,znti pmvnnials, all tA:tsily grown from seeds. Theannual kimls tlrr sometimes started indoors ; but usually the seedsare sown wli~~ro the PliilltS are to remain. Best results are to becspectrvl in most spc&s when new plants of tht perennial kindsarc grown from seeds every two or three years, as strong plants areobtained and the beds are kept clear of grass. Plants bloom thesecond year from seed. Old plants may be divided, if vigorous.SW Cbnatio?l.Dicentra, I&l>-trn (Illccding-Heart). k’uwnriacec.The clumps rnqr hc divided in early spring, or short cuttings mayl)e made of the roots and placed in sand. The native speciespropagate readily 13~ the undrrground parts - D. Czrcullaria bydivision of the bulbs, and D. ra?~&~is by the little tubers.~111 species h wrow from seeds that have been stratified or else sownin autumn.Dichorisandra. Corr~ 111 crl irr mm.Multiplied bq’ seeds, cut.tings of green shoots, and division of oldplants.