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Hardiness: USDA Zone 4a: to -34.4 °C (-30 °F) USDA Zone 4b: to -31.6 °C (-25 °F) USDA Zone 5a: to -28.8 °C (-20 °F) USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) USDA Zone 6b: to -20.5 °C (-5 °F) USDA Zone 7a: to -17.7 °C (0 °F) USDA Zone 7b: to -14.9 °C (5 °F)
Sun Exposure: Full Sun
Danger: N/A
Bloom Color: Purple
Bloom Time: Late Spring/Early Summer
Foliage: Deciduous
Other details: Average Water Needs; Water regularly; do not overwater
Soil pH requirements: 5.6 to 6.0 (acidic) 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline)
On Oct 15, 2006, ViburnumValley from Scott County, KY (Zone 5b) wrote:
Blue ash is one of the longest lived trees for central KY, partnering well with the bur oak and chinkapin oak in the agricultural landscapes around the Bluegrass. This tree ranges far into the upper midwest as well, especially on limestone-based soils.
I agree with the other posts here, and also encourage more planting of this tough tree. It is easy to sprout from seed, and more native plant growers are starting to offer small plants.
On Nov 12, 2004, melody from Benton, KY (Zone 7a) wrote:
Mainly a Midwestern tree seen in upland, dryish conditions.
Trunk bark whitish and somewhat scaly.Compound leaves 8" to 12" with 7 to 11 leaflets. A tall tree that flowers April/May, fruits are not plump and the wing extends to the seed base.
A nice hardwood tree with many uses, among which is the blue dye that the inner bark produces.
On Sep 7, 2003, Glowclubbr from Silver Spring, MD wrote:
Endangered in wild in Southern Ontario due to near complete destruction of native forest. It grows very well in cultivation, tolorates limestone soils VERY WELL, and is drought-tolerant.
It can grow fast, usually grows to 60 feet, but can exceed 120 feet. It is an excellent, hardy, extreme heat-tolerant, and sturdy street tree. My own turned a very attractive butter yellow in fall, superior to nearby Green Ashes. I do not understand why there are so many Green Ash hybrids, while the Blue Ash is superior in every way. It also has better foliage. Interestingly, the Blue Ash is the only Ash with square twigs just like the Euonymus alatus.
Regional...
This plant has been said to grow in the following regions:
2 vendors have this plant for sale.
