Costus dubius

Also Known As

Costus albus
Zingiber dibius
Spiral Flag

Plant type

perennial, bulb / corm / tuber

size

H: 4'-6'
W: 6'-8'

planting zones

9a-11

More Options

Costus dubius plant details

Costus dubius is a broadleaf deciduous perennial bulb / corm / tuber with green foliage. In summer white flowers emerge. Attracts bees making it an excellent addition to pollinator gardens. Grows well with mostly sun - mostly shade and regular water. Does well in well-drained soil. A good option if you're seeking something verticillium wilt resistant.

CHARACTERISTICS OF Costus dubius

Plant type: perennial bulb / corm / tuber
Plant family: costaceae, zingiberaceae
Foliage: deciduous green
Mature size: 6 FT - 8 FT - wide, 4 FT - 6 FT - tall
Flowers: white blooms in summer
Uses: rare, tropical-looking

GROWING CONDITIONS for Costus dubius

USDA Zones: 9a - 11
Sun exposure: mostly sun - mostly shade
Watering frequency: regular
Resistant to: verticillium wilt
Soil needs: well-drained

Nursery contributed plant descriptions

Costus dubius is a pretty African species not often seen for sale. It grows to about 4 feet and produces green cone shaped bracts with bright white flowers and yellow lips. Mature plants produce large numbers of bracts and each bracts produces large numbers of flowers making a very dramatic display. These are small seedlings from collected seed.