Is it deer resistant?

Yes

Warty Barberry is deer resistant.

Berberis verruculosa

Deer: Rarely
Height: 6 ft (1.8 m)
Spread: 4 ft (1.2 m)
Zones: 5–11
Light: Full sun

Shrub

Warty Barberry (Berberis verruculosa)

Photo: Krzysztof Ziarnek, Kenraiz · CC BY-SA 4.0

More details

Light: Full sun, Partial shade
Water: Medium
Type: Shrub
Maintenance: Low
Growth: Slow
Foliage: Evergreen
Features: Drought tolerant, Flowering
Best uses: Barrier, Border, Coastal, Hedge, Specimen

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