Ilex decidua 'Byers Golden' Golden Possumhaw

Introduction

This native North American tree is often seen as a spreading 8 to 10foothigh shrub but can also become a 20 foot tall tree when planted in partial shade. Although the 2 to 3 inch long, dark green leaves are deciduous they do not present any appreciable fall color change. From March to May, small white flowers appear among the leaves. These blooms are followed by the production of small fruits which become orange/red when they ripen in early autumn. Since male trees will not fruit, be sure to purchase females so you will not miss the abundant fruit production. These fruits persist on the tree throughout the winter and are quite showy against the bare branches. After the fruits have been exposed to freezing and thawing, they become a favorite food source of many birds and mammals.

General Information

Scientific name: Ilex decidua 'Byers Golden'

Pronunciation: EYE-lecks dee-SID-yoo-uh

Common name(s): 'Byers Golden' possumhaw

Family: Aquifoliaceae

Plant type: shrub

USDA hardiness zones: 5 through 9A (Figure 3)

Planting month for zone 7: year round

Planting month for zone 8: year round

Planting month for zone 9: year round

Origin: native to North America

Invasive potential: not known to be invasive

Uses: container or above-ground planter; recommended for buffer strips around parking lots or for median strip plantings in the highway; near a deck or patio; specimen; residential street tree; wide tree lawns (>6 feet wide); medium-sized tree lawns (4–6 feet wide); narrow tree lawns (3–4 feet wide); sidewalk cutout (tree pit); small parking lot islands (< 100 square feet in size); medium-sized parking lot islands (100–200 square feet in size); large parking lot islands (> 200 square feet in size)

Availability: grown in small quantities by a small number of nurseries

Description

Height: 12 to 18 feet

Spread: 8 to 12 feet

Plant habit: vase shape

Plant density: dense

Growth rate: slow

Texture: fine

Foliage

Leaf arrangement: alternate

Leaf type: simple

Leaf margin: serrulate

Leaf shape: obovate; elliptic (oval)

Leaf venation: pinnate

Leaf type and persistence: deciduous

Leaf blade length: 2 to 4 inches

Leaf color: green

Fall color: no fall color change

Fall characteristic: not showy

Flower

Flower color: white

Flower characteristic: spring flowering

Fruit

Fruit shape: round

Fruit length: less than 0.5 inch

Fruit cover: fleshy

Fruit color: yellow

Fruit characteristic: persists on the plant; showy

Trunk and Branches

Culture

Light requirement: plant grows in part shade/part sun

Soil tolerances: loam; sand; acidic; slightly alkaline; extended flooding; well-drained

Drought tolerance: moderate

Other

Roots: usually not a problem

Winter interest: plant has winter interest due to unusual form, nice persistent fruits, showy winter trunk, or winter flowers

Outstanding plant: plant has outstanding ornamental features and could be planted more

Pest resistance: no serious pests are normally seen on the plant

Use and Management

These small trees grow with many thin, grey trunks or stems arising from the ground in a clumping fashion. There are so many of them and they are so thick that they can act as a screen. Lower branches are often removed to form a small tree with a tight head of foliage along the outer portion of the crown. Interior leaves are often shaded out and drop from the tree. If lower branches are not removed, the plant develops into a large, spreading mound of foliage. Often found along stream banks in the wild, possumhaw tolerates wet soil and can be used to stabilize stream banks. It can also be utilized as a large accent shrub or small tree planted in a lawn area as a specimen. Allow for plenty of room for this plant to spread since they look their best when they develop a symmetrical canopy.

Possumhaw should be grown in full sun or partial shade on acid or alkaline, well-drained, moist soil. They would make a good plant for water retention ponds and other areas which regularly accumulate water.

There are variety of cultivars developed for fruit color, fruit persistence and tree habit including: 'Byers Golden'—yellow fruit; 'Council Fire'—persistent orange-red fruit well into the winter; 'Sentry'—hardy only to zone 6, columnar habit makes it potentially suited for planting in highway medians. There are other cultivars.

Pests and Diseases

There do not appear to be many serious problems affecting this tree.