Catberry

Ilex mucronata

Native to:
Canada, Prince Edward I., United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Aquifoliaceae
Genus:
Ilex
Species:
Ilex mucronata
USDA Symbol:
ILMU

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub , Tree
Height:
400 cm
Light Requirements:
Full Sun
Drought Tolerance:
Low
Bloom Months:
may,jun
Bloom Colors:
white, green
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

black-headed bell moth (Rhopobota naevana), Columbia silk moth (Hyalophora columbia), lilac sphinx (Sphinx kalmiae), Rhopobota finitimana, Rhopobota unipunctana, Sabulodes caberata

Garden & Ecology Notes

Wildlife Value:
birds, small mammals
Deer Resistant:
Yes
Fall Color:
yellow

Soil Requirements

Soil Type:
moist, acidic, organic-rich soil
pH:
4.5 - 6.5 (acidic to slightly acidic)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
Commonly found in wetlands and bogs

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. Germination can take 2-3 years in natural conditions.

The above propagation data sourced from Claude AI

Pre-treatment: Mix an equal amount of seeds with either perlite or vermiculite in a Ziploc-style bag or a small Rubbermaid-style container. Add a small amount of water (no visible water within the bag or container). Place bag in a room temperature setting for at least 2 months followed by cold storage (33-42 degrees F) for at least 2 months. Cold store until planted (up to 3 years).

Establishment: Seed is collected by hand from locally native plants within the eastern central Upper Peninsula. Flowers May-June. Seed is harvested July thru August. No information on germination rate or time range provided.

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