California Native Plant Society
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Marah macrocarpa
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Wild Cucumber
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Marah macrocarpa

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About Wild Cucumber (Marah macrocarpa) The Cucamonga Manroot or Bigroot, Marah macrocarpus, is the common manroot of most of southern California and Baja California. Cucamonga manroot has the most hairy shoots, stems, and leaves of all the manroot species native to California - this being consistent with its range having the most arid climate of all the species in California. Vines appear in late winter in response to increased rainfall, and can climb or scramble to a length of 6 meters (20 feet). Its leaves typically have five lobes with individual plants showing wide variation in leaf size and lobe length.
Plant Description
Plant Type
Vine, Perennial herb

Flower Color

Flowering Season
Spring, Winter

Native Status

Natural Setting
Site Type
Washes, shrubby or open places


Elevation ?
-159' - 6768'

Annual Precip. ?
2.6" - 46.1"

Summer Precip. ?
0.14" - 3.08"

Coldest Month ?
35.2° F - 58.8° F

Hottest Month ?
57.6° F - 88.5° F

Humidity ?
0.97 vpd - 38.62 vpd


Landscaping Information
Water Requirement ?
Very Low, Low
Extremely Low
Very Low
Moderate - High

Nursery Availability
Sometimes Available

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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