Hollyleaf Redberry

Rhamnus crocea subsp. ilicifolia

Native to:
Mexico, United States

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Rhamnaceae
Genus:
Rhamnus
Species:
Rhamnus crocea subsp. ilicifolia
USDA Symbol:
RHIL

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub , Tree
Height:
450 cm
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
mar,apr,may
Bloom Colors:
yellow, green
Landscaping Shrub:
Yes

Wildlife Benefits

Caterpillars:
★★☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Host Plant for Caterpillars

Ceanothus Silkmoth (Hyalophora euryalus), Itame guenearia, Nola minna, Nola nr. minna, Pero macdunnoughi, Spilosoma vestalis, Stigmella sp. D, Triphosa californiata, Hermelycaena hermes, Pale Swallowtail (Papilio eurymedon), Western Tiger Swallowtail (Papilio rutulus)

Garden & Ecology Notes

Wildlife Value:
birds, small mammals
Deer Resistant:
Yes
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts vigorously from root crown following fire. Common in chaparral fire regimes.

Soil Requirements

Soil Type:
rocky, well-drained, nutrient-poor soil
pH:
6.0 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
Commonly found in chaparral and coastal sage scrub habitats

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
30–90 days
Notes:
Seeds benefit from cold stratification. Germination can be erratic.

The above propagation data sourced from Claude AI

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).

Source: Claude AI