sawtooth oak (Quercus acutissima)

Second place champion sawtooth oak in Denver at Regis University.

Species info:

Leaves: Alternate, glossy, oblong leaves with many fine serrations ending in bristle tips; 4–8 inches long and 2–4 inches wide

Leaflets: None (simple leaves)

Leaf Surface: Glossy and smooth above, slightly paler beneath

Bark: Deeply ridged and furrowed even on young trees; gray-brown in color

Flowers: Male catkins golden in color, appearing in spring; female flowers are small spikes that appear with the leaves

Fruit: Acorns with deep, fringed, bristly cups that nearly cover the nut; mature in one season

Botanical: Quercus acutissima

Family: Fagaceae

Mature Height: Up to 60 feet in ideal conditions

Canopy Spread: Up to 60 feet

Foliage Type: Semi-evergreen, leaves persist into winter

Tree Shape: Symmetrical, round to pyramidal canopy with moderate crown density

Flowers: Inconspicuous; male catkins golden, female spikes emerge with leaves in spring

Fruit: Acorns, edible, but requires processing

Fall Color: Late yellow turning to brown

Water Use: Low to moderate; high drought tolerance once established

Hardiness: Zones 3–8

Soil Preference: Adapts well to various soils but may develop chlorosis in high-pH or alkaline soils

Native Range: Japan, China, and Korea

Wildlife Value: Acorns are highly valued by birds and mammals; good wildlife food source

Insects and Diseases: Generally pest-free; minor chlorosis possible in alkaline soils; can be invasive in parts of the Southeastern U.S.

Planting recommendations: A tree with potential

Information sources:

• Sawtooth Oak Fact Sheet ST-540. Environmental Horticulture Department, Florida Cooperative Extension Service

• Sawtooth Oak fact sheet. Department of Natural Resources, Ohio State