Is it deer resistant?

Yes

Boston Ivy is deer resistant.

Parthenocissus tricuspidata

Deer: Rarely
Height: 60 ft (18.3 m)
Spread: 10 ft (3 m)
Zones: 4–9
Light: Full sun

Perennial
Vine

Boston Ivy (Parthenocissus tricuspidata)

Photo: MartinThoma · CC0

Also called Grape Ivy, Japanese Creeper, Japanese Ivy

Perennial Parthenocissus

More details

Light: Full sun, Partial shade, Shade
Water: Low, Medium
Type: Perennial, Vine
Maintenance: Low, Medium
Growth: Fast
Bloom: Spring, Summer
Foliage: Deciduous
Features: Drought tolerant, Flowering
Best uses: Border, Mass planting, Naturalized, Play area, Rock garden, Vertical

More in Parthenocissus