American Holly
Ilex opaca

Description

Ilex opaca, or American holly is a non-native to Ontario, and is a slow-growing evergreen tree that offers fragrant berries on female plants. Native to eastern and south-central United States, ranging from coastal Massachusetts south to central Florida, and west to southeastern Missouri and eastern Texas. Deer-resistant and tolerant of road salt, it thrives in acidic soils with part shade but can suffer in alkaline soils. While it�s best suited for larger landscapes due to its size, it provides valuable nectar for pollinators, and is an attractive addition to your landscape. Both male and female trees are needed for fruit production.
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Planting Site and Native Range

Planting Site
Parks, Residential

Management Notes

Management Notes
Can become chlorotic in high pH soils

Tree Characteristics

Growth Rate
Slow (less than 30cm per year)
Width
5 - 10m
Height
12 - 15m
Soil Quantity
11 - 20 m
Leaves
Evergreen

Insects and Diseases

Insects and Diseases
This species typically has quite a few pests and diseases that influence its growth and survival. These include but are not limited to scale, leaf spot and rot, tar spot and holly leaf miner. Although this tree does have many pests and diseases, in low amounts as a specimen tree in parks or residental areas (i.e. backyards or even front yards) this tree does add value.

Tree Tolerances

Soil Salt Tolerance
Unknown
Salt Spray Tolerance
Tolerant
Flooding Tolerance
Moderate
Drought Tolerance
Moderate
pH Tolerance
Tolerant of acid to slightly alkaline soil (pH 5.0 to 7.5)
Shade Tolerance
Full Sun Part Shade
Plant Hardiness Zone
Zone 5 (a/b) | Zone 6 (a/b)
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