How much sun does Wyeth Biscuitroot need?

Wyeth Biscuitroot grows best in full sun conditions.

When does Wyeth Biscuitroot bloom?

Wyeth Biscuitroot blooms in April, May, and June.

Where is Wyeth Biscuitroot native?

Wyeth Biscuitroot (Lomatium ambiguum) is native to ID, MT, OR, UT and 2 more states, per vouchered herbarium specimen records and regional native plant society lists.

What pollinators does Wyeth Biscuitroot attract?

Wyeth Biscuitroot draws bees, beetles, and flies.

Is Wyeth Biscuitroot HOA-friendly?

Wyeth Biscuitroot takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Wyeth Biscuitroot

Name: Pollinator Patch
Author: Pollinator Patch

Lomatium ambiguum

Last reviewed: August 2026

Toxicity unknown

Wyeth Biscuitroot (Lomatium ambiguum) 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

6"–24" H × 4"–12" W

Bloom

Apr, May, Jun

Native to

ID, MT, OR, UT and 2 more states

Pollinators

bees, beetles, flies

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 452 programs across 44 states, each with a link to the provider and the date we last checked it.

Find rebates in your area

Browse plants for this ecoregion

North American Deserts Northwestern Forested Mountains Central Basin and Range

Lomatium ambiguum produces clusters of small yellow or white flowers on umbrella-like stems in spring. This compact perennial has finely divided, ferny foliage and thrives in dry, sunny conditions with minimal water once established. The plant goes dormant in summer, disappearing until the following spring.

In an HOA neighborhood

Wyeth Biscuitroot takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.

Works well in: backyard only.

Completely disappears in summer leaving bare spots
Ferny foliage can appear weedy to some
Unknown to most HOA boards as landscaping plant

Wildlife value

The early spring blooms provide crucial nectar for native bees, beetles, and flies when few other flowers are available. This makes it particularly valuable for supporting pollinators during their most active period.

Common questions

How much sun does Wyeth Biscuitroot need?: Wyeth Biscuitroot grows best in full sun conditions.
When does Wyeth Biscuitroot bloom?: Wyeth Biscuitroot blooms in April, May, and June.
Where is Wyeth Biscuitroot native?: Wyeth Biscuitroot (Lomatium ambiguum) is native to ID, MT, OR, UT and 2 more states, per vouchered herbarium specimen records and regional native plant society lists.
What pollinators does Wyeth Biscuitroot attract?: Wyeth Biscuitroot draws bees, beetles, and flies.
Is Wyeth Biscuitroot HOA-friendly?: Wyeth Biscuitroot takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

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

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