Possumhaw

Ilex decidua

Native to:
Mexico, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Aquifoliaceae
Genus:
Ilex
Species:
Ilex decidua
USDA Symbol:
ILDE

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub , Tree
Height:
900 cm
Light Requirements:
Full Sun,Part Shade
Drought Tolerance:
Medium
Bloom Months:
apr,may
Bloom Colors:
white
Landscaping Shrub:
Yes

Wildlife Benefits

Caterpillars:
★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Keystone Species Ranking

Caterpillar Keystone:
★★★★☆ Butterfly & moth species supported by this genus (NWF)
Pollen Specialist Bee Keystone:
★☆☆☆☆ Native pollen specialist bee species supported by this genus (NWF)

Host Plant for Caterpillars

Fall webworm (Hyphantria cunea), pawpaw sphinx (Dolba hyloeus), Red-banded leafroller (Argyrotaenia velutinana)

Reported Fauna Sightings

Moths:Fall webworm (Hyphantria cunea), pawpaw sphinx (Dolba hyloeus)

Garden & Ecology Notes

Wildlife Value:
birds, small mammals
Deer Resistant:
Yes
Fall Color:
yellow
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts from roots and crown following fire. Common in bottomland forests with periodic fire regimes.

Soil Requirements

Soil Type:
moist, fertile, well-drained loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
Prefers floodplain and bottomland areas

Propagation & Germination

Stratification:
Warm then cold/moist stratification (double dormancy) — 150–240 days
Germination Time:
30–90 days
Notes:
Seeds exhibit double dormancy requiring warm stratification followed by cold stratification. May take two years to germinate in natural conditions.

The above propagation data sourced from Claude AI

Pre-treatment: None required

Establishment: Seeds exhibit deep dormancy and do not germinate until the second year. Seeds are purchased from local people who collect within a 50 mile radius of the nursery. Ilex species are dioecious. Female plants bear bright red to red-orange fruits that mature during fall months.

Source: npn.rngr.net

ORGHPS Germination Guide: Expose to fluctuating outdoor winter temps incl. freezing for 3 months. Increase light/temp in spring.

Source: Ontario Rock Garden & Hardy Plant Society