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Ilex opaca

American Holly

Tree Characteristics

Leaves:

Evergreen

Height:

12 - 15m

Width:

5 - 10m

Growth Rate:

Slow

Tree Tolerances

Plant Hardiness Zone:

5, 6

Shade Tolerance:

Full Sun Part Shade

pH Tolerance:

Tolerant of acid to slightly alkaline soil (pH 5.0 to 7.5)

Drought Tolerance:

Moderate

Flooding Tolerance:

Moderate

Salt Spray Tolerance:

Tolerant

Soil Salt Tolerance:

Unknown

Planting site and Native Range

Planting Site:

Parks, Residential

Native to Ontario:

No

Native to North America:

Yes

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.

Management Notes

Can become chlorotic in high pH soils