Hoary Manzanita

Arctostaphylos canescens

ark-tow-STAF-i-los kah-NES-ens · broadleaf evergreen shrub · introduced

Last updated March 8, 2026

Plant Profile

Size & Form

Height

4–6 ft

Site Requirements

Light

Full Sun to Shade

Hardiness

Zones 7a–8b

Ornamental Interest

Origin

coastal Northern California, found on sand or rocky sites

RustHigh

Uredinial Stage (Summer)

Peak Population & Dispersal

Root weevilModerate

Adult Emergence & Foliar Feeding

Diseases: Regionally Documented (5)

Thielaviopsis basicola Black Root Rot Abiotic or fungal Leaf Gall Symptom category — not a single disease Leaf Spot Phytophthora Dieback Multiple genera (Melampsoridium, Thekopsora, Naohidemyces... Rust

Pests: Regionally Documented (3)

Aphidoidea Aphid Otiorhynchus spp. Root weevil Tamalia coweni Aphid (Manzanita leafgall aphid)

Data Maturity

Structured Multiple sources. Expert review underway.