Gladiolus
Gladiolusx hortulanus 'Black Jack'

Category
Bulbs
Tropicals and Tender Perennials

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

Sun Exposure
Full Sun

Foliage
Herbaceous
Smooth

Foliage Color
Blue-Green

Height
36-48 in. (90-120 cm)

Spacing
6-9 in. (15-22 cm)

Hardiness
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)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)

Where to Grow

Danger
Parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction

Bloom Color
Scarlet (dark red)
Maroon/Burgundy

Bloom Characteristics
Flowers are good for cutting

Bloom Size

Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall

Other details

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

Patent Information

Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed