Technical sheet
Fraxinus americana 'Autumn Purple'
diaplant.pt
Fraxinus americana 'Autumn Purple'White ash
Plant typeTree
Mature height12 to 20 m
Mature width8 to 12 m
Growth rateModerate
Foliage persistenceDeciduous
Flowering seasonNo significant ornamental flowering
Autumn colourOrange, Red, Purple, Multicoloured
Drought toleranceModerate
Landscape applicationsShade tree, Park or woodland, Wide avenues, Riverbanks and riparian zones
Growth formOval
Crown densityMedium
Sun exposureFull sun, Partial shade
Soil moistureModerately moist, Moist
Soil drainageWell drained, Moderately drained
Soil textureSandy, Loam, Clay
Soil reaction — pHAcidic, Neutral, Alkaline/chalky
Climate suitability — PortugalNorthern coast, Northern and central interior, Lisbon and Tagus Valley
Cold hardiness5 °C to 0 °C, Down to −5 °C, Down to −10 °C, Down to −15 °C
Specific tolerancesFrost, Strong wind, Air pollution
Pruning toleranceModerate
Predominant foliage colourGreen
Fruiting seasonNo significant fruiting
Fragrance and aromaNo fragrance
Season of greatest interestAutumn
Geographical originNorth America
Status in mainland PortugalIntroduced, not naturalised
Contribution to biodiversityShelter/nesting for wildlife
ToxicityNon-toxic
Pollen allergy potentialHigh
Presence of thornsAbsent
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