Holly, Foster

The Fosters Holly tree typically reaches heights between 15 and 25 feet with spreads between 8 and 12 feet. The canopy is a dense, symmetrical, pyramid shape. This tree is a cross between Ilex cassine x Ilex opaca. For best growth, the tree should be planted in well-drained, slightly acidic soil with full to partial sun.

The alternate, simple LEAVES are 1 1/2-3” long. Each leaf is a dark shiny green above, and a little paler below. The apex is a sharp point and the upper edge of the leaf sometimes has shallow spines.

In late spring, dioecious, white FLOWERS appear. The flowers are small, only 1/4-1/3” in diameter, have 4 petals and grow singly. Although the flowers are small, a numerous amount appear making them showy.

The FRUIT comes in the form of bright red, round drupes. Berries persist into the wintertime making the tree very attractive. It has a fleshy covering and attracts all types of wildlife.

The gray BARK is very thin and slightly mottled or striped. The slender TWIGS are greenish red and have very small buds.

Birds find shelter and food from the Fosters Holly. However, if eaten by humans, the berries typically cause vomiting and/or diarrhea.

In 13 years (2001 to 2014) the following parameters have changed: Height, from 22 to 28 ft; Circumference, from 28.3 to 35.5 inches; Average Crown Spread, from 16.5 to 21.3 feet; Index Value, from 54 to 69. The extended drought has taken a toll on this tree. It appears to be in poor health.