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Mountain Pepperweed
Lepidium montanum
  
About Mountain Pepperweed (Lepidium montanum) 1 Nurseries Carry This Plant Lepidium montanum is a species of flowering plant in the mustard family known by the common name mountain pepperweed. It is native to western North America from Oregon to Montana to northern Mexico, where it can be found in a number of habitats, often on salty or gravelly soils. There are several varieties, many of which are difficult to distinguish. This is a short, spreading, shrublike biennial herb producing a rounded form up to about 40 centimeters tall and greater in width. The leaves near the base of the plant are up to 15 centimeters long and are divided into several toothed lobes; those further up on the stem are shorter and often undivided. The plant flowers abundantly in rounded to cylindrical flower clusters a few centimeters wide. Each small flower has white to cream-colored petals about 2 millimeters long and two to six stamens. The fruit is an oval-shaped capsule a few millimeters long. Varieties of the species include:
Plant Description
Plant Type
Plant Type
Perennial herb

Size
Size
0.8 - 1.3 ft tall

Form
Form
Mounding

Growth Rate
Growth Rate
Fast

Flower Color
Flower Color
Yellow, White, Cream

Flowering Season
Flowering Season
Spring

Wildlife Supported
 


 
Butterflies & moths hosted ( 7 likely * ) SHOW ALL

Landscaping Information
Sun
Sun
Full Sun

Nurseries
Nurseries

Soil Description
Soil Description
Adaptable, tolerant of sand, loam and clay

Natural Setting
Climate
Climate
Annual Precipitation: 5.1" - 67.9", Summer Precipitation: 0.91" - 2.87", Coldest Month: 27.7" - 50.9", Hottest Month: 57.0" - 79.1", Humidity: 0.97" - 31.65", Elevation: 2576" - 7913"

Alternative Names
Common Names: Mountain Pepper-grass


Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora


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