Nyssa sylvatica (Black Tupelo or Black Gum)


Michael's Opinion

A class tree with a fiery disposition in autumn and an outstanding specimen that should be planted in the finest gardens.

Botanical Information

FamilyNyssaceae
GenusNyssa
Speciessylvatica
CategoryWoody
TypeTree (deciduous)
OriginMaine, Ontario, Michigan to Florida and Texas. The genus Nyssa was named for one of the Naiads (water nymphs) in Greek mythology since one member of the genus, Nyssa aquatica, grows in water.
Pronunciation

Details

USDA Hardiness Zone4 - 9
USDA Hardiness Ref.
Canadian Hardiness Zone7
Canada Hardiness Ref.
RHS Hardiness ZoneH6
RHS Hardiness Ref.
Temperature (°C)to -20
Temperature (°F)-4
Height9-15 m
Spread6 -8 m
GrowthSlow
Flowering PeriodMay, June

Description and Growing Information

ShapeBroadly pyramidal.
LandscapeExcellent specimen tree with outstanding summer and autumn foliage, acceptable tree street, not for heavily populated areas.
PropagationSeed, softwood or semi-ripe wood.
CultivationDifficult to transplant because of tap root, prefers moist well drained, acid soil, but in the wild it is found on dry mountain ridges and in cold mountain swamps, full sun to semi shade, does not tolerate high pH soils, protect from wind, prune in autumn.
PestsCankers, leaf spots, rust, tupelo leaf miner and scale, however they are largely problem free.
Notable SpecimensUsher Gardens, County Wicklow, Ireland. Royal Horticultural Society, Wisley, Surrey, England. Royal Botanical Gardens, Burlington, Ontario, Canada.
Bark/Stem DescriptionDark grey to almost black, broken into thick irregular ridges, which are checked across into short segments, making it look like alligator hide, varies from tree to tree.
Leaf DescriptionAlternate, simple, ovate, obovate or elliptic 7.5n- 16 cm long, 3.5 - 7.5 cm wide,
Flower DescriptionPolygamo dioecious, appearing with the leaves,some trees can be wholly male or female, others with sporadic fruit set.
Fruit DescriptionOblong, drupe, bluish black ripening late September.
Colour DescriptionLustrous dark green in summer changing to fluorescent yellow to orange in autumn.
Texture DescriptionMedium in leaf and winter.

Photographs