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Hairy Manzanita

Arctostaphylos columbiana

Ericaceae · broadleaf · native

You spot Hairy Manzanita on open, rocky coastal slopes from British Columbia to central California, where its distinctive hairy twigs and evergreen foliage persist year-round. This native shrub dominates exposed ridgelines and coastal bluffs in the maritime Pacific Northwest.

Hairy Manzanita grows 3-10 feet tall and demands full sun to part shade with low water needs and well-drained soil (zones 7a-8b). Slow growth and moderate lifespan suit it to rocky, infertile sites where few competitors thrive. Provide minimal supplemental water once established. Watch for black root rot, leaf gall, and phytophthora dieback in wet settings; manzanita leafgall aphids may cause cosmetic galls.

Quick Facts

Height
3–10 ft
Growth Rate
Slow
Light
Sun to Part Shade
Soil
Adaptable
Water
Low
Hardiness
Zone Zones 7a–8b
Bloom Time
Mar 1-Mar 31
Origin
Pacific Northwest native

Phenological Calendar

Stage Typical Window
New growth flush BBCH 11 Feb 15-Mar 15
Bloom start BBCH 61 Mar 1-Mar 31
Bloom end / petal fall BBCH 69 Apr 1-Apr 15
Fruit/seed development BBCH 71 Jun 1-Aug 31
Fruit/seed maturity BBCH 85 Sep 1-Nov 30

Diseases (5)

Pests (3)