Is it deer resistant?

Yes

Bottlestopper is deer resistant.

Eschscholzia californica

Deer: Rarely
Height: 2 ft (61 cm)
Spread: 2 ft (61 cm)
Zones: 6–11
Light: Full sun

Annual
Biennial
Perennial
Wildflower

Bottlestopper (Eschscholzia californica)

Photo: Kollibri1969 · CC0

Also called California Poppy, Desert Trumpet

Annual Eschscholzia

More details

Light: Full sun
Water: Low, Medium
Type: Annual, Biennial, Perennial, Wildflower
Maintenance: Low
Growth: Fast
Bloom: Spring, Summer
Features: Drought tolerant, Flowering
Best uses: Border, Container, Lawn, Mass planting, Meadow, Naturalized, Path, Patio