Also known as Common Triteleia · Grassnut · Triplet-Lily
Ithuriel's Spear (Triteleia laxa) is a perennial bulbous plant native to western North America, producing striking star-shaped blue to white flowers.
At-a-glance light, water, soil, and growing conditions from plant data
Full sun to partial shade
75% intensity
Prefers at least 6 hours of direct sunlight daily for best flowering.
Moderate during growth, dry when dormant
50% intensity
Ensure excellent drainage to prevent bulb rot.
Well-drained, sandy loam
50% intensity
Hardy
50% intensity
Tolerates a wide range of temperatures; requires a cool, dry dormant period.
Low
25% intensity
A light feeding in spring is usually sufficient; avoid over-fertilizing.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
Non-toxic
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water moderately during the growing season (spring to early summer) when the soil surface feels dry. Reduce watering significantly as the foliage begins to yellow and die back in late summer.
Ensure good drainage to prevent bulb rot. Allow soil to dry out between waterings when dormant.
Remove spent flower stalks after blooming to prevent seed formation and direct energy back into the bulb. Cut back yellowing or dead foliage in late summer or early autumn once it has naturally withered.
This helps maintain plant health and tidiness, and prevents disease.
Propagate by offsets or division of bulbs. In autumn, carefully separate small bulblets from the parent bulb. Replant them immediately at the appropriate depth.
Seed propagation is also possible but takes longer to reach flowering size, typically 2-3 years.
Ithuriel's Spear is best left undisturbed in the ground for several years. If division is necessary, repot the bulbs in late summer or early autumn into well-draining soil.
Plant them at a depth of approximately 5-10 cm with the pointed end facing upwards, spacing them about 15-20 cm apart.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Ithuriel's Spear (Triteleia laxa)
Where Ithuriel's Spear (Triteleia laxa) is found
Density
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Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Liliopsida |
| Order | Asparagales |
| Family | Asparagaceae |
| Genus | Triteleia |
| Species | Triteleia laxa |
Similar in genus Triteleia
Answers based on plant encyclopedia data
