Russian Olive vs Black Gum - TreeTime.ca

Russian Olive vs Black Gum

Elaeagnus angustifolia

Nyssa sylvatica

COMING SOON

(new stock expected: fall of 2025)

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Russian Olive
Black Gum

Russian Olive is a medium-sized deciduous tree that has attractive silvery coloured foliage with small yellow flowers that emit a fragrant sweet smell.

It is drought and salt tolerant, and works well as a shelterbelt species. Russian Olive can also be used to combat erosion.

Note: although Russian Olive is planted as an attractive boulevard tree in many northern areas, in warmer areas it can invade watersheds and is considered invasive. Please do some research and plant the right tree in the right place.

Black Gum is a slow-growing ornamental shade tree with a dense pyramidal shape. The foliage is dark green in the summer, and transitions to bright fall colours which include red, orange, purple, and gold. It is commonly used as an ornamental tree in parks and large gardens as a specimen or shade tree.

The small greenish white flowers provide nectar for bees and black tupelo honey is a sought after flavour. The small dark blue fruits which ripen in late summer will attract birds and other animals to your yard. The fruits are edible, but very sour, and are primarily used for pies, flavouring, and drinks. Plant the Black Gum where it will live long-term, as it has a large taproot and does not transplant well.

Russian Olive Quick Facts

Black Gum Quick Facts

Zone: 2a
Zone: 3a
Height: 9 m (30 ft)
Height: 12 m (40 ft)
Spread: 5 m (15 ft)
Spread: 8 m (25 ft)
Light: full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: dry, normal
Growth rate: medium
Growth rate: slow
Life span: medium
Life span: long
Suckering: none
Suckering: medium


Foliage: silver scales
Fall colour: purple, orange, yellow, red
Flowers: yellow
Fruit: silver-yellow, olive-like
Berries: dark blue
Flavor: sour
Harvest: september to october
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no

In row spacing: 1.8 - 2.4 m (6 - 8 ft)

Between row spacing: 5 m (16 ft)
Native to: ON
Other Names: silver berry oleaster, wild olive
Other Names: black tupelo, pepperidge tree, sour gum, tupelo