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PlantFiles: Yellow Guinea Yam
Dioscorea cayennensis

 
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Family: Dioscoreaceae
Genus: Dioscorea (dy-oh-SKOR-ee-uh) (Info)
Species: cayennensis (kae-yen-EN-sis) (Info)

Category:
Vegetables
Tropicals and Tender Perennials
Vines and Climbers

Height:
30-40 ft. (9-12 m)
over 40 ft. (12 m)

Spacing:
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)

Hardiness:
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)
USDA Zone 11: above 4.5 °C (40 °F)

Sun Exposure:
Full Sun
Sun to Partial Shade
Light Shade

Danger:
Unknown - Tell us

Bloom Color:
Unknown - Tell us

Bloom Time:
Unknown - Tell us

Foliage:
Herbaceous
Shiny/Glossy-Textured

Other details:
May be a noxious weed or invasive
Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Unknown - Tell us

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

Seed Collecting:
Unknown - Tell us

Click thumbnail
to view:

By Michaelp
Thumbnail #1 of Dioscorea cayennensis by Michaelp

Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorComment
Positive Michaelp On Oct 8, 2002, Michaelp from Orange Springs, FL (Zone 8b) wrote:

Roots are delicious/grows higher and farther than all the rest of my Dioscorea plants.Has thorny stems /longer and more pointed leaves/a little slow geting started but realy makes up for it once it starts. Requires 100 cm of water well distributed throughout the growing season.Start new plants by cuting pieces off the tubers/will not tollerate any frost /should be mulched to protect from extreems/needs rich well drained soil/can be grown in mulch w/composted manure,and brought in for the winter. Roots should be cooked before eating.[this Yam does not produce aerial tubers]feb/8/04 I just dug up some of the tubers ,first year roots were about 2-4 lbs,and second year roots were 7 to 8 lbs.



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