Veronicastrum virginicum f. albiflorum

Germination

Sow indoors in spring or autumn. Surface sow onto moist seed compost. Do not cover seeds, simply press into the soil. Place in a propagator or seal in a polythene bag to maintain humidity. Ideal temp. 20°C. Keep moist by watering from the bottom of the tray only. Germination takes 2-4 weeks approx. If germination does not occur after 3-4 weeks cold stratify. Move seeds to a fridge, ideal temp. 4°C for 2-4 weeks, then return to warmth for germination. After germination admit air and grow on in cooler conditions. Transplant seedlings when large enough to handle to 8cm pots and grow on. Acclimatise and plant out after danger of frost has passed. Autumn sowings should be planted out the following spring.

Growing

Prefers a rich, loamy soil in full sun but will tolerate any moist soil in full or partial sun.

Cultivation

Deadhead regularly to prolong the flowering window. Top growth will be killed by frost, when this occurs cut stems back to 3-5cm above the soil line. Propagate by seed or by division of congested clumps every 3 years.