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Description
Arctostaphylos insularis, also known as island manzanita, is a shrub that is native to California and Baja California. It is a member of the Ericaceae family and can reach heights of up to 15 feet. The plant has a unique appearance, with twisting branches and reddish-brown bark that peels to reveal a smooth, reddish layer underneath. The leaves are small and dark green, and the flowers are pink or white and bloom in the winter and spring.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Ericales |
| Family | Ericaceae |
| Genus | Arctostaphylos |
Appearance
The island manzanita has a unique appearance with twisting branches and reddish-brown bark that peels to reveal a smooth, reddish layer underneath. The leaves are small and dark green, and the flowers are pink or white and bloom in the winter and spring. The plant can reach heights of up to 15 feet and has a spread of up to 10 feet. The fruit of the plant is a small, red berry that is edible and has a sweet flavor.
Care Guide
The island manzanita is a relatively low-maintenance plant. It can grow in poor soil conditions and requires little water once established. However, it should be watered regularly during the first year after planting to help it establish its roots. The plant prefers full sun but can tolerate partial shade. It is hardy in USDA zones 8-10. Fertilization is not necessary, but a light application of a balanced fertilizer in the spring can help promote growth.
Common Pests & Diseases
The island manzanita is relatively pest and disease resistant. However, it can be susceptible to root rot if planted in poorly draining soil. To prevent root rot, make sure the soil is well-draining and avoid over-watering the plant. The plant can also be susceptible to spider mites, which can be treated with insecticidal soap.
Habitat
The island manzanita is native to California and Baja California and can be found in coastal sage scrub, chaparral, and oak woodland habitats. It is well adapted to grow in poor soil conditions and is often found growing on rocky slopes and in other areas with nutrient-poor soil.
Questions and Answers
Q: Can island manzanita be grown in containers?
A: Yes, island manzanita can be grown in containers, but it may require more frequent watering and fertilization than plants grown in the ground.
Q: Is island manzanita poisonous?
A: No, island manzanita is not poisonous and the fruit is edible.
Q: How often should island manzanita be pruned?
A: Island manzanita does not require regular pruning, but can be pruned in the winter or early spring to maintain its shape or to remove any dead or diseased branches.
Q: Can island manzanita be propagated from cuttings?
A: Yes, island manzanita can be propagated from cuttings taken in the spring or summer.
Related Plants
- Arctostaphylos edmundsii
- Arctostaphylos glauca
- Arctostaphylos hookeri
- Arctostaphylos manzanita
- Arctostaphylos uva-ursi
References
- “Island Manzanita.” Las Pilitas Nursery, www.laspilitas.com/nature-of-california/plants/875–arctostaphylos-insularis.
- “Arctostaphylos insularis.” California Native Plant Society, www.calscape.org/Arctostaphylos-insularis-()
