Alderson's rush-rose
Crocanthemum aldersonii
Last reviewed: September 2026
Alderson's rush-rose (Crocanthemum aldersonii) is a perennial forb native to CA. It blooms in April, May, and June. The flowers draw bees.
Toxicity unknown
Alderson's rush-rose (Crocanthemum aldersonii) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
low
Size
4"–12" H × 8"–12" W
Bloom
Apr, May, Jun
Native to
CA
Pollinators
bees
Before you buy
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A small, low-growing perennial with fuzzy gray-green leaves and bright yellow five-petaled flowers that open only in sun and close by afternoon. Forms a tight, compact mound on dry rocky slopes.
Growing Alderson's rush-rose
Grow Alderson's rush-rose in full sun and low water. Mature plants reach 4 to 12 inches tall and spread 8 to 12 inches wide.
Wildlife value
Short-lived flowers provide pollen for small native bees during the brief morning bloom window.
Common questions
- How much sun does Alderson's rush-rose need?
- Alderson's rush-rose grows best in full sun conditions.
- When does Alderson's rush-rose bloom?
- Alderson's rush-rose blooms in April, May, and June.
- Where is Alderson's rush-rose native?
- Alderson's rush-rose (Crocanthemum aldersonii) is native to CA, per the World Checklist of Vascular Plants (Kew).
- What pollinators does Alderson's rush-rose attract?
- Alderson's rush-rose draws bees.
Native range data from the World Checklist of Vascular Plants (Kew). 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 Alderson's rush-rose? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.