Penstemon angustifolius

(Whorled Penstemon)

Brilliant blue flowers in June, narrow leaves. Hardy, likes sun and dry conditions. Replace every 3 or 4 years 12-24"

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Product details

Hardiness:

Hardy

Longevity:

Perennial

Growing Condition:

Dry sun

Season:

Early summer

Good For:

Rockery

Colour:

Blue

Germination:

Sow in autumn, overwinter outdoors, germinates in spring. Or mix seed with damp vermiculite, keep warm 3 weeks, put in fridge 6 weeks, then sprinkle mix on compost and put in cool light place