Ontario's Tree Atlas: Green/Red Ash (Fraxinus pennsylvanica)

Leaf; Photo: MNR
Bark; Photo: MNR
Seed; Photo: Ohio Dept. of Natural Resources Tree; Photo: Ohio Dept. of Natural Resources
Did you know?
The green ash’s abundant seed crops are a source of food for many kinds of wildlife.

Green ash trees grow across southern and central Ontario, as far north as the Ontario-Minnesota border and the north coast of Georgian Bay, east to the North Bay region.

 

This small to medium-sized tree grows quickly. Five to nine long, oval leaflets grow on a central stalk. Leaves are yellowish-green, turning yellowish-brown in the fall. Leaflets tend to fall individually. This ash’s bark is greyish-brown and it has small winged fruit.

 

This ash is popular as a shade tree in residential areas and was widely planted because of its good form although the Emerald Ash Borer is currently threatening the species across its entire range.

 

Size:  Up to 25 metres tall
Moisture:  can tolerate moist and seasonally temporarily flooded sites
Shade:  moderately shade tolerant
Soil: prefers rich soils

 

Planting Tip:  When planting, you need to dig a large enough hole for the root to grow rapidly without too much strain. If you are digging in clay soil, the hole will need to be at least 6 times the width of the root ball. More tips...

 

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