Santa Rosa Island Manzanita

Arctostaphylos confertiflora

Ericaceae · broadleaf evergreen shrub · introduced

Last updated March 8, 2026

Plant Profile

Size & Form

Height

5 ft

Site Requirements

Light

Full Sun

Ornamental Interest

Origin

the Channel Islands, i

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.