Possumhaw Holly (Ilex decidua) · Species Notes · Short's Resort Field Station

Restoration Role

Deciduous wildlife shrub. Possumhaw drops its leaves to reveal bright red berries held on bare branches through winter for cedar waxwings, robins and other birds — a bright note in the shelterbelt understory. Dioecious: only female plants fruit.

Site Suitability

PrimaryEastern Shelterbelt understory, drainage edges

SecondaryRiver edge, filter band

AvoidPermanently saturated drainage core; driest caliche uplands

SoilsBeB, SeC, RuB; adaptable

HydrologyMoist to seasonally wet; adaptable, sun to part shade

RangeIn range: NPSOT lists it for the Cross Timbers (Eastern Cross Timbers) as well as the Edwards Plateau, and it grows on the property.

Propagation & Care

Seed collectionCollect ripe red berries late fall through winter from known female plants; clean the pulp.

StratificationWarm stratification 30–60 days then cold 60–90 days — seed is double-dormant and slow, and germination can take a year or more. (Ilex is a warm-then-cold genus; do not shortcut it.)

PropagationFrom cuttings (the faster route): semi-hardwood cuttings under mist with rooting hormone. From suckers: lift a rooted sucker from an established colony in winter. From seed: clean the pulp and give the full warm-then-cold stratification, then be patient. Possumhaw is dioecious — only female plants fruit, and they need a male nearby; propagate from known female (berrying) plants where fruit is the objective, and keep a male in every planting.

Container progressionCutting / sucker → 5-inch pot → 1-gal fabric if held → Field planting.

Nursery wateringModerate; tolerates wetter conditions than most. Do not let it bake dry.

LightSun to part shade; fruits best with good light.

OutplantingBest age 12–18 months. Plant November–February.

Establishment Watering

Year 1: 5 gallons every 2 weeks during drought.
Year 2: drought only.

Field notesA congener of yaupon and handled the same way — same dioecy, same warm-then-cold dormancy. Hold back known males when thinning so every planting keeps a pollinator. Collect from on-site colonies where they exist.