Arctostaphylos otayensis, commonly known as Otay Manzanita, is an evergreen shrub native to the chaparral ecosystems of the coastal ranges of Southern California and Baja California, Mexico. This species is adapted to dry, rocky slopes and is often found in association with other chaparral species. It typically reaches up to 2.5 meters in height and is noted for its erect form. The bark is distinctive, starting as shreddy red and becoming gray as it ages. Otay Manzanita has smooth, oval-shaped, pointed leaves that are a deep green color. The dense inflorescences of flowers appear in late winter to early spring, with tightly bunched pale pink blooms that are highlighted with bright magenta, offering a striking contrast against the foliage. The fruit is a red drupe, measuring between one half and one centimeter wide, which can attract birds and other wildlife.

Otay Manzanita is valued for its drought tolerance, making it suitable for xeriscaping and native plant gardens. It is also appreciated for its ornamental bark and showy flowers, which can add color to the landscape in the typically bloom-sparse winter months. In cultivation, it thrives in full sun or part shade, requiring very low to low amounts of water, and prefers soils with fast drainage. While it is not commonly used in urban planting due to its specific habitat requirements, it can be an excellent choice for naturalistic and conservation-oriented landscapes. Gardeners should be aware that this plant can be susceptible to root rot if overwatered or planted in poorly drained soils. It is also prone to fungal diseases such as powdery mildew if conditions are too humid or if there is insufficient air circulation.CC BY-SA 4.0