Is it deer resistant?

Yes

Scotch Heather is deer resistant.

Calluna vulgaris

Deer: Rarely
Height: 2 ft (61 cm)
Spread: 2 ft (61 cm)
Zones: 4–7
Light: Full sun

Ground cover
Perennial
Shrub

Scotch Heather (Calluna vulgaris)

Photo: Abraham · CC0

Also called Scottish Heather

Ground cover Calluna

More details

Light: Full sun, Partial shade
Type: Ground cover, Perennial, Shrub
Maintenance: Low
Bloom: Fall, Summer
Foliage: Evergreen
Features: Flowering
Best uses: Border, Mass planting, Slope