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