JCIT 5, 1913. 
THE GARDENERS’ MAGAZINE. 
493 
with pretty blue flowers on stems nearly a 
foot high. It is most suitable for the rock 
garden. 
P. barbatus.—No garden is complete with¬ 
out this species, which is one of the most 
elegant of perennials. It is one of the taller- 
growing kinds, with stems from 2ft. to 3ft. 
high or more, bearing a profusion of rich 
scarlet flowers. One of the easiest of all to 
manage, it is easily increased by division or 
by seSis. There are many seedling forms of 
this plant, with flowers of various shades of 
rose, carmine, and scarlet. 
P. caeruleus.—Wlien obtainted true this is 
a beautiful plant hailing from the Rocky 
Mountains of Colorado. Sub-shrubby in 
habit, it grows about 1ft. high, with narrow' 
glaucous leaves and flowers of a flne blue 
PENTSTEMONS: I 
attractive and interesting species. I 
Vnart from tlie florigt’s varieUes, chiefly 
kri^ed from P. Hartwcgi, P. Cobsea, and 
p gentianoidcs, this large and ^autaful 
conUins many usetul and atoactive 
Bocics. wtict are of great value in the gar- 
tn It is essentially a North American 
wnus the Rocky Mountains and the north- 
iUt of the continent being the home of many 
|)ecies, while others are found as far south 
easy to manage, only a few having the un¬ 
fortunate habit of failing to accommodate 
themselves to circumstances. Their main 
requirements are a deep and rich, but well- 
drained soil. With li^ral treatment they 
will produce most effective and pleasing re¬ 
sults, with an abundance of flower. 
During our damp and foggy winters plants 
in the open are tried severely, and they often 
PENTSTEMON PUBESCENS. 
A hardy specks with soft purplish-blue floivcrs and lilac Up. E.vhibited by the Wargiave Hardy Plant Farm at a recent 
^ ^ R.H.S. meeting. 
Mexico. There have probably been fift 
in cultivation in this country at vari 
arc, some are short-lived the 
cultivation for a time unt 
«>atile°hab^te^ 
great range of color 
family, including nearly a 
rose + purple and violet, scarlet an 
varioii^i? j flowering of tl 
In extends from May to Octobe 
whiU exceedingly effective 
like P garden the choice kind 
andU8^5?P^y‘*"®> P- P- Menzies 
^rioti^ are most charming. 
as a whol 
uo difficulties, as most of them ai 
get cut back badly, especially where the soil 
is at all close and retentive. But usually 
they will break away freely in the spring. 
is as well, however, to always keep a re¬ 
serve stock of the more tender kinds in pots 
in a cold frame. Seeds of most species may 
be obtained readily, and they wiU germinate 
freely if fresh. IVith many of the species, 
like P glaber and its allies, seeds produce 
the 'be^ results. They may a^ be increased 
by means of cuttings in July, when half- 
ripened shoots should be selected, and in¬ 
serted in sandy soil under a hand-glass. They 
root readily, and good plants may be had 
if they are potted up and kept in a frame 
for the winter. Ti> 
P. azureus is a dwarf plant from California, 
colour. The only way to increase this species 
is to select a few' plants and cut off all flowers, 
thereby inducing it to produce young shoots 
v.'hich may be taken off’ and inserted as cut¬ 
tings. 
P. Cobaea.—A native of Texas, this beauti¬ 
ful large-flowered kind is somewhat tender, 
and must be kept in a frame for the winter. 
In height, from 1ft. to 2ft., the flowers vary 
in colour from pale purple to white. 
P. confertus.—A useful plant for the rock 
garden, having a dwarf spreading habit, and 
producing its lilac-coloured flowers in May 
and June. The variety caeruleo-purpureus is 
a good form, with bluish-purple flowers. 
P. Eatoni.— Reaching a height of 3ft., this 
