Is it deer resistant?

Yes

Five Stamen Tamarix is deer resistant.

Tamarix ramosissima

Deer: Rarely
Height: 25 ft (7.6 m)
Spread: 20 ft (6.1 m)
Zones: 2–10
Light: Full sun

Shrub
Tree
Weed

Five Stamen Tamarix (Tamarix ramosissima)

Photo: svitlana-kyiak · CC0

Also called Salt Cedar, Tamarisk, Tamrix

More details

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