Penstemon venustus alba – This stunning white-flowered form is a sizeable spreading shrub, with few or no basal leaves, sports strong stems carrying long, upward-facing ivory-white flowers, sometimes with white hairs on the floor of the tubular blossom. In the wild in the USA this plant grows on dry rocky slopes at high elevations. This spring / summer flowering penstemon is very hardy and will tolerate dryer conditions. Enjoys sun or light shade in well drained soil. 70 cm H x 90 cm W.
Penstemon venustus alba seed can be sown at any time but are best sown in winter or early spring to benefit from a cold spell in the wet compost to break their dormancy. We advise covering seeds very thinly with sand or fine grit to about the depth of the seed size. If the seeds do not come up within 6 to 12 weeks the damp seed tray can be given cold treatment in a fridge for about four weeks. They may still take very many months to appear, so please never discard the pot or tray. Pot on seedlings to harden off and mature before finally planting out in the garden.