CHE REFERENCE LIBRARY - Pole Shift Survival Information

332 THE NURSERY-~~~,42\i’i,T,4L
Helipterum, including Rhodanthe. C)onr~~.sifcr~,
Seeds sown in earl~~ spring under cover, or directly in the open
gaI&n.
Helleborus (Black Hellebore. C.~hristmas Kosc). fZn,l.1L~2.(‘221Mlf(r.
Seeds sown as soon as ripe may br used for the obtaining of
new varieties. Root -divisions are usually employed. Se IJ’WZtrunz
for white and green hellebore.
Hemerocallis (1)a.y Lily). I,ilinc~ce.
Propagated by division of the clumps, which should also be
(ii\-idcd for the goocl of the plant,. Seeds may be used, sown as
socn as ripe, of such kinds as produce them ; t,he J’oung plants
should remain in s~rl-hoses until the following spring, when they
m;ly 1x1 planted out in rows. Fig. 50.
Hepatica. I-!rr~ ~17~~211~~~.
Propagated by- division of the roots in autumn ; also by seeds
sown very shallow in a moist shaded soil.
Heracleum (C’ow-Parsley . ( ‘ow-Parsnip). Irnlbfll~fcr@.
Increased by se& or division, the former usually growing readily
if fresh.
Hernia& Caryophlltlnrrt.
Propagated by ctivision and seed.
Hesperis (Iktnc’s I~iolet . iiotrkct). CIVW(~NW.
The single kinds ;ire grown from SC& ; the double forms (which
arc most prized) by dividing the roots, and by cuttings.
Heterocentron. nlr~(rt.sfo~l/ncr~,r.
Propagation a~ for centr:rdenia, which see.
Heuchera (Alrrrn Root). Sasifrnguc~~~.
Increased 1)~ dividing the clumps in spring or autumn, and also by
seeds.
Hevea (ilrazilian Rubber-Tree). EuphorbincrcP.
Propagated 1))~ seed, sown as soon as ripe ; also by cuttings.
Hibiscus. Jlulr~c~.
( ‘uttings of grec*n wood are cotnmonly used, made in summer for
hardy Ypccies or in early spring for tender ones. Cuttings of