How to plant
When to Plant
Plant Dichelostemma corms in the fall, from late September to early November. This allows time for the roots to develop before winter dormancy.
Where to Plant
Choose a spot in full sun or very light partial shade. The soil must be well-draining, as corms are highly susceptible to rot in wet or heavy soils. Planting on a slope or in a raised bed can be beneficial in areas with poor drainage.
Preparing the Soil
Loosen the soil to a depth of 15 to 20 cm and remove any stones or compacted material. If the soil is dense or clay-heavy, mix in compost, coarse sand, or grit to improve drainage and aeration.
Planting the Corms
Place the corms with the pointed end facing upward. Plant them at a depth of 10 to 12 cm — about two to three times the height of the corm. Space them roughly 15 to 20 cm apart. Planting in groups or naturalistic clusters will give a fuller, more dramatic effect.
After Planting
Water lightly after planting to help settle the soil. After that, very little watering is needed until growth resumes in spring. Avoid soaking the soil, especially during dormancy.
Spring Growth and Blooming
Leaves will emerge in early spring, followed by flower stems in late spring to early summer. These plants don’t require fertilizing in rich soil but will benefit from a light feed during active growth in lean conditions.
After Blooming
Let the foliage die back naturally. Once it yellows and withers completely, it can be trimmed away. During summer dormancy, keep the soil relatively dry. This dry rest period is essential for long-term success with Dichelostemma.
Extra Growing Tips
Dichelostemma thrives in naturalistic plantings, dry sunny borders, and gravel gardens. Because the foliage dies back early, consider pairing it with summer perennials or ornamental grasses that will fill the visual gap once blooming finishes. These plants are also well-suited to containers, provided the pots drain freely and remain dry in summer.
