Mountain Pepperwort
Lepidium montanum
Last reviewed: June 2026
The USDA PLANTS Database (opens in new tab) does not flag Mountain Pepperwort as toxic to livestock.
Light
full sun
Water
low
Size
12"–36" H × 12"–24" W
Bloom
Mar, Apr, May
Native to
AZ, CA, CO, ID and 8 more states
Pollinators
butterflies, bees, nectar insects
Browse plants for this ecoregion
Mountain Pepperwort is a compact native forb that produces clusters of small white flowers in spring. This drought-tolerant biennial grows in a neat mounded form and goes dormant in summer heat, returning the following year from seed.
In an HOA neighborhood
Mountain Pepperwort is an HOA-friendly choice. Maintenance level: low. Tidiness: 2 out of 5.
Works well in: front yard, foundation, street edge, mid zone.
Wildlife value
The spring blooms attract butterflies, bees, and other nectar-seeking insects during an important early season period.
Common questions
- How much sun does Mountain Pepperwort need?
- Mountain Pepperwort grows best in full sun conditions.
- When does Mountain Pepperwort bloom?
- Mountain Pepperwort blooms in March, April, and May.
- Where is Mountain Pepperwort native?
- Mountain Pepperwort (Lepidium montanum) is native to AZ, CA, CO, ID and 8 more states, per the USDA PLANTS Database and regional native plant society lists.
- Is Mountain Pepperwort toxic to livestock?
- The USDA PLANTS Database does not flag Mountain Pepperwort as toxic to livestock.
- What pollinators does Mountain Pepperwort attract?
- Mountain Pepperwort draws butterflies, bees, and nectar insects.
- Is Mountain Pepperwort HOA-friendly?
- Mountain Pepperwort is generally an HOA-friendly choice in the right placement, with low maintenance.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Does Mountain Pepperwort fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.