Ceanothus delilianus
Sackflower
Common names: Ceanothus
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Description
The Sackflower, botanically Ceanothus delilianus, transforms sunny garden corners from June to August into a brilliant blue. Its dense flower spikes sit on summer‑green shoots and attract bees and bumblebees almost magically. The shrub grows loosely upright, usually 100 to 150 cm tall and wide, and prefers a warm‑protected spot facing a south wall. In harsh conditions it needs light winter protection, as young shoots are sensitive to hard frost. Popular varieties such as ‘Gloire de Versailles’ provide striking accents in the bed with their strong blue hue.
Care instructions
Plant the Sackflower in a full‑sun, wind‑protected location with well‑draining, somewhat lean soil; it tolerates poor feet poorly. Water young plants regularly until they are established, thereafter watering only during longer dry periods. Prune the shrub in early spring, just before flush begins, cutting back heavily to promote abundant flower set in summer. In autumn, heap leaf or pine straw around the root area and wrap young shoots with fleece if needed, allowing the plant to survive colder winters between week 48 and week 10. Remove faded spikes promptly so the plant can invest energy in new shoots rather than seed production.
Soil & site
Soil pH
Soil type
well-drained, lean, dry, lime-avoiding
Feeding
Light feeder
Pruning
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