CHE REFERENCE LIBRARY - Pole Shift Survival Information

THE NURSERY-LIST 301
Dicksonia. CyatheaceE.
Propagated by division mostly, but also by spores.
page ,312.
See Femzs,
Dictamnus (Dittany, or Fraxinella). Rutaceae.
Seeds should be sown in fall as soon as ripe and covered an inch
or so. Seedlings should bloom in two years. Increased with
difficulty by division.
Dictyosperma. Pul macea).
Propagation as for areca, which see.
Didymocarpus. C’cwneriacece.
Propagatecl by seeds, when obtainable. Cuttings of young
shoots when,growth begins, in sandy soil in heat, usually do well.
SW Lksr~f~riczcfw, page 318.
Didymochlaena. Polypod~iacm.
Increased by division. See Ferns, page 312.
Dieff enbachia. ,-i TCZCCYE
Propagated by cuttings of the stem, cutting into pieces 2 or 3
inches long which are dried for a few days, then put into boxes of
sand. These cuttings should be potted as soon as roots have
formed. See JraWca, page* 239.
D&villa (Weigela) . Ca~~~~~oZ~inc~~.
Increased by suckers and cutt.ings made in spring, summer or
autumn. Hardened green cuttings, handled under a frame in
summer, are estensively used by nurserymen. (See page 110.)
They are sometimes grown from cuttings in winter from forced
plants. IIardwood cuttings, made in winter and planted in
spring, like the grape, succeed well. The American nat,ive species
may be grown from seeds sown in spring. .
Digitalis (Foxglove). Scro~~h &zriar~f~cc~.
Raised from seeds, sown in spring, either indoors or in the open.
The common foxglove (D. pzrrpzma) often self-sows ; it is best
treated as a biennial ; seeds for next year’s bloom may be started
in spring, or in late summer and handled in a frame to prolong the
season. Digitalis may also be propagated by division of clumps.
Dill (Anethwn gmveolens). Umbelliferte.
Raised from seed sown in spring where the plants are to stand.