Fraxinus americana
White Ash
Mature Bark |
 'Autumn Purple' |
Typical leaf with 7 leaflets |
Not as hardy as Green Ash but has a much superior ornamental value.
Size: 50-75' tall and equally wide
(Can reach 120')-- Medium growth rate. 1-2'/year for 10-15 years. Habit: Pyramidal or upright oval when young, maturing
to a more rounded habit
Hardiness: Zone: 3 to 9
Leaf:opposite, pinnately compound;
8-12" (25cm.)long, Usually 7 leaflets 2 1/2-5"(9cm.) long and 2"
(5cm.) wide; ovate or elliptical, finely toothed or entire.
Flower: 1/4" (6mm) long;
purplish in clusters
Culture: Deep, moist, well drained
soil, pH adaptable, full sun,
Disease/Insects: Leaf rust, canker,
ash borer, lilac leaf miner, lilac borer, carpenter worm, webworm, brown-headed ash
sawfly, gall (caused by mites) oyster shell scale.
Landscape Value: Don't be fooled by
the long list of diseases and insect problems, this tree usually does'nt have problems in
the home landscape (where it will get alittle more care). Ashes in general are very clean
trees, the flowers and fruit are very small and will not litter patios or walkways. Has an
excellent fall color. Very refined, rounded shape. Be careful of where you plant this tree
because of it's mature size. One of the best shade trees for the landscape only out done
by certain varieties of Maples.
| Cultivars: | 'Autumn Purple'- Shown above: Deep red/purple fall color, 45' |
| 'Greenspire' - Narrow upright form, orange fall color. | |
| 'Champaign County' A strong sturdy tree but poor fall color (yellow), 45' | |
| 'Royal Purple' - Upright habit, Purple fall color, resistant to frost craking, 30' | |
| 'Skyline' - Oval form, orange-red fall color, 50', semi-glossy leaf |
Propagation:
Seeds germinate in stratification of 70°f - 82° for 30 days followed by 41° for 60 days.
April's 'Plant of the Month'
Amelanchier canadensis - Serviceberry
Feb. 1997 Plant Leucophyllum frutescens Texas Sage
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