Arctostaphylos australis

Arctostaphylos australis

Native to:
Mexico

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Ericaceae
Genus:
Arctostaphylos
Species:
Arctostaphylos australis
USDA Symbol:
ARAU7

Growth Characteristics

Height:
200 cm
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
jan,feb,mar,apr
Bloom Colors:
white, pink
Evergreen Shrub:
Yes
Landscaping Shrub:
Yes

Keystone Species Ranking

Caterpillar Keystone:
★★★★☆ Butterfly & moth species supported by this genus (NWF)
Pollen Specialist Bee Keystone:
★★☆☆☆ Native pollen specialist bee species supported by this genus (NWF)

Garden & Ecology Notes

Wildlife Value:
birds, bees, butterflies, small mammals
Deer Resistant:
Yes
Fragrant:
Yes
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts vigorously from basal burls after fire. Fire stimulates seed germination and rejuvenates stands. Well-adapted to chaparral fire regimes with 30-100 year intervals.

Soil Requirements

Soil Type:
sandy, acidic, nutrient-poor soil
pH:
5.0 - 6.5 (acidic to slightly acidic)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
native to well-drained, rocky slopes

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Scarification:
Seed coat scarification required before sowing
Germination Time:
30–120 days
Notes:
Seeds have hard seed coats and double dormancy. Scarification followed by cold stratification improves germination. Germination can be slow and erratic even under optimal conditions.

The above propagation data sourced from Claude AI

ORGHPS Germination Guide: Expose to fluctuation outdoor winter temperatures including freezing for 3 months. Gradually increase light and temperature in the spring. Requires light or the seed is very fine. Surface sow and expose to light. Requires scarification. Nick or rub between sheets of sandpaper. Requires soaking. Place in warm water until seeds swell, usually 24-48 hours. Discard water and any seeds that remain floating. * immerse in boiling water for 20 seconds

Source: Ontario Rock Garden & Hardy Plant Society