San Diego abundanceweed
Iva hayesiana
Last reviewed: October 2026
San Diego abundanceweed (Iva hayesiana) is a perennial shrub native to CA. It blooms in June, July, August, and September.
Toxicity unknown
San Diego abundanceweed (Iva hayesiana) 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
medium
Size
12"–36" H × 24"–48" W
Bloom
Jun, Jul, Aug, Sep
Native to
CA
Before you buy
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Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 460 programs across 44 states, each with a link to the provider and the date we last checked it.
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Browse plants for this ecoregion
A coarse spreading perennial with triangular gray-green leaves and inconspicuous greenish flower heads. Forms colonies along the edges of brackish marshes and alkaline seeps.
Growing San Diego abundanceweed
Grow San Diego abundanceweed in full sun and medium water. Mature plants reach 12 to 36 inches tall and spread 24 to 48 inches wide.
Wildlife value
Wind-pollinated flowers offer little forage value, but the plant stabilizes soil along brackish marsh edges.
Common questions
- How much sun does San Diego abundanceweed need?
- San Diego abundanceweed grows best in full sun conditions.
- When does San Diego abundanceweed bloom?
- San Diego abundanceweed blooms in June, July, August, and September.
- Where is San Diego abundanceweed native?
- San Diego abundanceweed (Iva hayesiana) is native to CA, per vouchered herbarium specimen records and regional native plant society lists.
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 San Diego abundanceweed? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.