Brodiaea may require to be watered during dry spells but do not water at other times of the year.
In very damp or very got summers, grassnut bulbs should be moved indoors and replanted again in the Autumn.
Brodiaea Growing and Care Guide
Common Names: Clusterlily, Brodiaea, Grassnut, Fire-cracker flower, Blue-dicks, Ithuriel’s spear. Family: Asparagaceae. Life Cycle: Hardy bulb. Height: 12 to 36 inches (30 to 90 cm). Native: Americas.
Growing Region: Zones 6 to 10. Flowers: Spring through to early summer. Flower Details: White, purple, violet. Tube. Star-shaped. Foliage: Herbaceous. A few basal leaves.
Seed: 1/8 inch (3 mm). Autumn. Bulb: 3 to 4 inches (7 to 10 cm). Beginning of Autumn. Spacing 3 to 6 inches (7 to 15 cm). Sow Inside: Seeds should be sown in vermiculite and watered from below. Germination time: one to three months. Temperature 55 to 60°F (13 to 16°C). Sow in the spring, transplant outdoors in autumn.
Requirements: Full sunlight. Good drainage. Gritty soil, loose soil. With the exception of Brodiaea peduncularis which requires a heavy soil. Regular watering during the growing season; cease watering once flowering has finished. It will take two years for seed grown plants to flower, so easier to grow from bulbs. Propagate: cormels can be planted in the autumn.