Weed's mariposa lily
Calochortus weedii
Last reviewed: September 2026
Weed's mariposa lily (Calochortus weedii) is a perennial forb native to CA. It blooms in May, June, and July. The flowers draw native bees and beetles.
Weed's mariposa lily (Calochortus weedii) is not on the ASPCA Animal Poison Control Center toxic plant list for dogs or cats (aspca.org (opens in new tab), last reviewed 2026-08-15). If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
low
Size
8"–24" H × 4"–8" W
Bloom
May, Jun, Jul
Native to
CA
Pollinators
native bees, beetles
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A perennial bulb with a few grass-like leaves and wiry stems bearing open, bowl-shaped flowers in yellow to bronze tones marked with maroon blotches and dense hairs at the petal base. Grows on dry, rocky slopes and clay soils, going dormant after its early summer bloom.
Growing Weed's mariposa lily
Grow Weed's mariposa lily in full sun and low water. Mature plants reach 8 to 24 inches tall and spread 4 to 8 inches wide.
Wildlife value
The unusual hairy, marked petals attract native bees and beetles that forage among the hairs for pollen.
Common questions
- How much sun does Weed's mariposa lily need?
- Weed's mariposa lily grows best in full sun conditions.
- When does Weed's mariposa lily bloom?
- Weed's mariposa lily blooms in May, June, and July.
- Where is Weed's mariposa lily native?
- Weed's mariposa lily (Calochortus weedii) is native to CA, per vouchered herbarium specimen records and regional native plant society lists.
- Is Weed's mariposa lily toxic to dogs?
- Weed's mariposa lily is not on the ASPCA Animal Poison Control Center toxic plant list for dogs (aspca.org).
- Is Weed's mariposa lily toxic to cats?
- Weed's mariposa lily is not on the ASPCA Animal Poison Control Center toxic plant list for cats (aspca.org).
- What pollinators does Weed's mariposa lily attract?
- Weed's mariposa lily draws native bees and beetles.
Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
If something looks wrong
Common plant problems, and what to check first
These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
Ready to grow Weed's mariposa lily? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.