Full Sun
Easy care
Moderate watering
Frost Hardy
7a-9a
USDA zone
-18°C
Minimum temperature
Expected size
Height | Spread | |
---|---|---|
35m | Max | 15m |
2m | Min | 3m |
25 years to reach maturity
Flowering
spring
summer
autumn
winter
This plant has no fragrance


More images of Oak
Oak Overview
Quercus is a large genus with around 600 deciduous or evergreen trees and shrubs, also known as Oaks. These are popular trees for their foliage, growth habit and in some species, attractive autumn colour. Foliage is arranged in spirals and leaves are distinctively lobed, with serrated or smooth edges dependent on species. These species are monoecious, and thus produce male and female flowers on the same individual. Male flowers are yellow and arranged on catkin structures for optimal wind dispersal of pollen to female flowers, which are small and bud-like with feathery, divided stigmas. Flowers are followed by the very distinctive acorns - small, ovoid brown nuts held in scaly half-cup structures. Oak trees are often seen in the countryside in the Northern hemisphere or grown as specimens in large gardens or parks. The foliage and acorns are toxic to dogs.
Common problems with Oak
Susceptible to oak wilt in USA
How to propagate Oak
Seed
Grafting
Graft in late summer to mid-autumn.
Special features of Oak
Autumn colour
Attractive fruits
Acorns
Other uses of Oak
Grown for their habit, foliage and, in some deciduous species their autumn colour. Suitable for coastal conditions. Attracts butterflies and a variety of wildlife.