Vegetable Oyster Plant, Salsify, Wild Quinine
Tragopogonporrifolius 'Mammoth Sandwich Island'

Category
Biennials
Vegetables

Water Requirements
Average Water Needs; Water regularly; do not overwater

Sun Exposure
Sun to Partial Shade

Foliage
Grown for foliage

Foliage Color

Height
24-36 in. (60-90 cm)

Spacing
12-15 in. (30-38 cm)

Hardiness
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)

Where to Grow

Danger
N/A

Bloom Color
Lavender
Medium Purple

Bloom Characteristics

Bloom Size

Bloom Time

Other details

Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information

Propagation Methods
From seed; direct sow after last frost

Seed Collecting
Seed does not store well; sow as soon as possible