Polemonium (Jacob's Ladder)
Hardy perennial border plants of anornamental character and of the easiest culture. Any soil suits them, and they merely require sowing in the open either in spring or autumn. P. Richardsoni is most c...
and they merely require sowing in the open either in spring or autumn.
P. Richardsoni is most commonly met with, its blue flowers being
produced in early autumn. Height, 1-1/2 ft.
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