How to Water blue blossom?
Moderate regular watering, allowing brief slight drying between soakings

blue blossom · Ceanothus thyrsiflorus
Also known as: blue brush
Grow in fertile, well-drained soil in full sun with shelter from strong, cold winds. Lime tolerant but may become chlorotic on shallow chalk soils. See ceanothus cultivation
Moderate regular watering, allowing brief slight drying between soakings