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Costus Species, African Ginger, Showy Costus

Costusdubius

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Costus dubius by Kalpavriksha
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Genus
Costus (KOS-tus)
Info
Species
dubius (DOO-bee-us)
Info
Synonym
Costus albus
Costus littoralis
Costus maculatus
Costus zechii
Sun Exposure
Sun to Partial Shade
Light Shade
Foliage
Herbaceous
Height
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)
Spacing
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
Hardiness
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
Danger
N/A
Bloom Color
White/Near White
Bloom Time
Late Spring/Early Summer
Mid Summer
Other Details
Category
Perennials
Tropicals and Tender Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color

Unknown - Tell us

Where to Grow

Unknown - Tell us

Bloom Characteristics

Unknown - Tell us

Bloom Size

Unknown - Tell us

Other details

Unknown - Tell us

Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From herbaceous stem cuttings
Allow cut surface to callous over before planting
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Seed does not store well; sow as soon as possible
Regional

This plant is said to grow outdoors in the following regions:

Sarasota, Florida

Thomasville, Georgia

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MotherNature4
Bartow, FL (Zone 9a) | November 2008 | positive

C. dubius form large clusters of 6 ft. canes. The fleshy flowers are white with yellow splashes. They are not common in cultivation....Read More

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