Gets a few feet all around, blooms late Winter through Summer, with adequate moisture.  Does well in bright shade as well as moderate sun; needs moderate water throughout the year to keep it looking best.  Uncommon; native to Wi'ma, Limu, and much of the Southern California region in occasional protected drainage ravines/gullies and north slopes that don't have much competing vegetation. 

Native to much of the SoCaL region westward of the mountains, including the islands, Toyon(Heteromeles arbutifolia) gets around 6 to 15 feet +, depending on water and location.  White blooms in Summer to Fall, red berries in Fall/Winter.  Aka, California Holly. 

(Click on underlined title to see more) Island Tree Mallow(Lavatera assurgentifolia), Northern Channel Islands endemic, from Tukan to Anyapax, related to Hibiscus.  Deep pink flowers are the usual offering.  Blooms most of the year.

Island Bush Poppy(Dendromecon harfordii),  gets to around 6 to 10 feet, and, like other plants, can be kept smaller with appropriate trimming management.  SoCaL islands endemic, native only to Wimat, Limu, Pimu, and Kinki(though eliminated by feral goats and pigs on Kinki).  Blooms year-round.

Island Oak (Quercus tomentella) with windswept growth on a ridge, on Wimat(the island having been stripped of much vegetation by introduced cattle, elk, deer, sheep, pigs, goats - all introduced, none native, not even deer).   In lighter wind locations, and with adequate water, the Island Oak is upright to rounded, and gets around 60 feet, but can be maintained by appropriate trimming to practically any smaller size, just like Bonsai, - as can, practically, any tree or other plant.

 (Click on underlined title to see more photos) Island Ironwood, fern-leaf form (Lyonothamnus floribundus ssp. asplenifolius). Potentially grows to 30 feet tall or more with abundant water, but less with less water, upright to upright rounded.  SoCaL islands endemic.  The 'asplenifolius' subspecies is endemic(occurring natively only on) to Wimat (Santa Rosa Island), Limu (Santa Cruz Island), and Kinki (San Clemente Island).   The other subspecies, 'floribundus' (Lyono. flor. ssp.

The Guadalupe palm(Brahea edulis), endemic(native only to) to Guadalupe Island, which is 265 miles southwest of San Diego, grows slowly to about 30 feet tall by about 14 feet wide.  Grows about 4 feet per decade with adequate water.  Best aesthetic is by pulling fronds off rather than cutting.  Fronds pull off after browning/dying.  Figure doing a once per year dead-fronds removal in winter.

(Click on underlined title to see more) Island Snapdragon Bush(Galvezia speciosa) gets around a few feet all around, and potentially much more either spreading in brambling manner or crawling up other plants.  Natively occurs on Pimu, Kinki, and Guadalupe island.

Eriophylum nevinii, SoCaL islands endemic, native only to Siwot, Pimu, and Kinki.  Gets about about a few feet all around, late Spring to mid Summer bloom.