Is it deer resistant?

Yes

Russian Olive is deer resistant.

Elaeagnus angustifolia

Deer: Rarely
Height: 30 ft (9.1 m)
Spread: 20 ft (6.1 m)
Zones: 2–8
Light: Full sun

Shrub
Tree

Russian Olive (Elaeagnus angustifolia)

Photo: Thebirdbrand · CC BY-SA 4.0

Shrub Elaeagnus

More details

Light: Full sun, Partial shade
Water: Low, Medium
Type: Shrub, Tree
Maintenance: High, Low
Growth: Fast
Bloom: Spring
Foliage: Deciduous
Features: Drought tolerant, Flowering

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