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Wavy-leaf Soap Plant

Chlorogalum pomeridianum

Last reviewed: November 2026

Chlorogalum pomeridianum is a bulb-forming forb of California and Oregon grasslands and oak woodlands, blooming April through July with white star-shaped flowers that open in late afternoon and close by morning.

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Wavy-leaf Soap Plant (Chlorogalum pomeridianum)
Photo: no rights reserved

Toxicity unknown

Wavy-leaf Soap Plant (Chlorogalum pomeridianum) 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

12"–60" H × 12"–36" W

Bloom

Apr, May, Jun, Jul

Native to

CA, OR

Pollinators

bees, butterflies, moths

Before you buy

Your city may pay you to plant this

Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 461 programs across 44 states, each with a link to the provider and the date we last checked it.

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Picture natives in your own yard

Upload a photo of your yard and Patch Vision shows a rendering of it planted with natives for your region, like Wavy-leaf Soap Plant.

Amole is a perennial native forb with wavy basal leaves and tall flowering stalks that bloom from spring to summer. The white star-shaped flowers open in the evening, giving it the common name 'soap plant' due to its bulb's traditional use as soap. It goes dormant in summer after flowering.

Growing Wavy-leaf Soap Plant

Grow Wavy-leaf Soap Plant in full sun and low water. Mature plants reach 12 to 60 inches tall and spread 12 to 36 inches wide. Expect low maintenance to keep it looking intentional in a front yard.

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In an HOA neighborhood

Wavy-leaf Soap Plant is an HOA-friendly choice in the right placement. Maintenance level: low. Tidiness: 2 out of 5.

Works well in: mid zone.

  • Leaves die back and can look unkempt during dormancy
  • Tall flower stalks may appear too wild for formal landscapes
  • Best integrated within designed native garden beds rather than as standalone specimens

Wildlife value

The evening-blooming flowers attract various nocturnal pollinators including moths, as well as bees and butterflies during daylight hours. The plant provides important food sources for native pollinators.

Common questions

When does wavy-leaf soap plant bloom?
Wavy-leaf soap plant typically flowers from April through July. Individual blossoms open in the late afternoon or evening and wilt by the next morning, a habit reflected in the species name pomeridianum.
What pollinators visit Chlorogalum pomeridianum?
Bees, butterflies, and moths visit the flowers. Because the blooms open in late afternoon and evening, night-flying moths are especially important visitors.
What growing conditions suit this plant best?
It does best in full sun to light shade with low water, matching the dry, warm summers common where it grows in grassland and open woodland settings. The bulb goes dormant after flowering and foliage dies back for the summer.
Is Wavy-leaf Soap Plant HOA-friendly?
Wavy-leaf Soap Plant is generally an HOA-friendly choice in the right placement, with low maintenance.

These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.

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.

See all plant problem guides

Ready to grow Wavy-leaf Soap Plant? Add it to your garden in the Pollinator Patch App to track it and get season-by-season care guidance.