Puerto Rico Holly

Ilex nitida

Native to:
Bahamas, Cuba, Dominican Republic, Haiti, Leeward Is., Puerto Rico, United States, Virgin Islands, Windward Is.

📍 View on iNaturalist →

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Aquifoliaceae
Genus:
Ilex
Species:
Ilex nitida
USDA Symbol:
ILNI

Growth Characteristics

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

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)

Garden & Ecology Notes

Wildlife Value:
birds
Deer Resistant:
Yes

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 6.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
consistently moist
Notes:
native to subtropical regions, prefers humid environments

Propagation & Germination

Stratification:
Warm then cold/moist stratification (double dormancy) — 60–120 days
Notes:
Ilex seeds often exhibit double dormancy requiring warm then cold stratification; germination can be slow and erratic.

The above propagation data sourced from Claude AI

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