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Plant type

Shrub

Size

3 ft Tall
10 ft Wide

Form

Mounding, Spreading

Growth rate

Moderate

Dormancy

Summer Deciduous, Summer Semi-deciduous, Evergreen

Color

White, Purple, Red

Flowering season

Spring, Summer

Common uses

Groundcover

Lycium californicum is a sprawling shrub in the Solanaceae (Nightshade) family known by the common names California boxthorn and California desert-thorn. This plant is native to the coast of southern California, including the Channel Islands, from Los Angeles County into northern Baja California, as well as nearby Arizona. This slightly thorny shrub has thick, fleshy, bulbous green leaves and bell-shaped white flowers with purple streaks or spots. It bears bright red shiny berries 3 to 6 millimeters in diameter which are edible and taste like tomatoes. There are numerous relatives in the Lycium genus that are primarily desert plants, but this species is strictly coastal. In the wild it goes completely leafless in summer and appears dead. However, it responds very rapidly to rain and will even leaf out in response to a summer shower. If given continuous garden water it can remain evergreen.

Sun

Full Sun

Water

Low, Very Low

Summer irrigation

Max 1x / month once established

Ease of care

Moderate

Cold tolerance

Tolerates cold to 25° F

Soil drainage

Fast,Medium,Slow

Soil description

Typically very sandy but can also tolerate clay. Tolerates saline soil..
Soil PH: 6.0 - 7.0

Maintenance

Because of its rangy habit, it may need to be cut back periodically to control its spread. Prune in late summer when it is leafless.

Propagation

Seeds or cuttings

Sunset Zones

8, 9, 14*, 15*, 16*, 17*, 19*, 20*, 21*, 22*, 23*, 24*

Use with other sage scrub plants including Shaw's Agave (Agave shawii), Sagebrush (Artemisia californica), San Diego Viguiera (Bahiopsis laciniata), Nevin's barberry (Berberis nevinii), Bushrue (Cneoridium dumosum), Dudleya spp., California Encelia (Encelia californica), Buckwheat (Eriogonum fasciculatum or parvifolium), San Diego Barrel Cactus (Ferocactus viridescens), Chaparral Yucca (Hesperoyucca whipplei), Menzies' Goldenbush (Isocoma menziesii), Fishhook Cactus (Mammillaria dioica), Nuttall's Scrub Oak (Quercus dumosa), Redberry (Rhamnus crocea), Sage (Salvia spp.)

Coastal Agave

Agave shawii

California Sagebrush

Artemisia californica

San Diego County Viguiera

Bahiopsis laciniata

Nevin's Barberry

Berberis nevinii

Caterpillars
Pollinators

Butterflies and moths supported

0 confirmed and 3 likely

Confirmed Likely

Loxostege albiceralis

Five-spotted Hawkmoth|Tomato Hornworm

Manduca quinquemaculata

Carolina Sphinx|Tomatoe Sphinx|Tobacco Hornworm

Manduca sexta

Site type

Buffs and slopes, lagoon edges, marine terraces, and similar areas within about 10 miles of the coast

Plant communities

Coastal Sage Scrub,