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) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F) USDA Zone 9a: to -6.6 °C (20 °F) USDA Zone 9b: to -3.8 °C (25 °F)
Sun Exposure: Full Sun
Bloom Color: Purple
Bloom Time: Late Spring/Early Summer
Other details: Average Water Needs; Water regularly; do not overwater
Soil pH requirements: 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline)
Patent Information: Non-patented
Propagation Methods: From semi-hardwood cuttings From seed; direct sow outdoors in fall From seed; winter sow in vented containers, coldframe or unheated greenhouse
Seed Collecting: Allow seedheads to dry on plants; remove and collect seeds
On Jan 10, 2009, Malus2006 from Coon Rapids, MN (Zone 4a) wrote:
Green ash is one of the most commonly planted ash species thought there are several other species of ashes that are a bit difficult to tell apart - thus the very low numbers of reported 'have this species'. Blue ash are hard to find in the nursery trade because of their large amount of seeds produced by female trees while black ash are more of a weedy species - more leggy in appearance.
Diseases - free? No way - Green ash regularly get infected by a nonnative species of ash bug (Homoptera family) which hits every year, and when the tree is stressed, causes most of the leaves to be shed, creating new ones in mid summer. There's a gall type that hits the flower buds, leaving it brown and hanging on the branches for between one and maybe 5 years (I guess) and leaves tannin stains (brownish) on concretes and asphalts.
On Jun 2, 2005, darylmitchell from Saskatoon, SK (Zone 3a) wrote:
Green ash is a favoured tree in urban landscapes because of its hardiness, adaptability and resistance to pests and diseases. It's considered a good "solar friendly" tree for energy conservation. It gives moderately dense shade in summer due to its compound leaves, and its open branch structure allows sunlight to get through in the winter. It is often the last tree to put forth leaves in spring and among the first to drop them in autumn.
Because of its good qualities, green ash is often overplanted. A new and growing threat to these trees is a non-native insect called the emerald ash borer (Agrilus planipennis). It has killed millions of ash trees in Ohio, Michigan and Indiana. It is also present in southwestern Ontario.
On Apr 3, 2004, riceoak from Fort McMurray Canada wrote:
Green Ash - This tree is found on urban sites in Northern Canada (Zone 2b).
This plant has been said to grow in the following regions:
Morrilton, Arkansas Edgewater, Colorado Jacksonville, Florida Lake City, Florida Memphis, Florida Homecroft, Indiana Benton, Kentucky Gramercy, Louisiana New Orleans, Louisiana North Vacherie, Louisiana Valley Lee, Maryland Minneapolis, Minnesota White House Station, New Jersey New York, New York Belfield, North Dakota Blue Ash, Ohio Hilliard, Ohio Altamont, Oregon Irwin, Pennsylvania Dickson, Tennessee Conroe, Texas Hereford, Texas Johnstown, Wyoming Riverton, Wyoming