Yellow yam (Dioscorea cayenensis)
Care, watering, light and tips for Yellow yam on Floravia.
Quick facts
- Family: Dioscoreaceae
- Difficulty: Moderate care
- Watering: every 7 days
- Light: Partial shade
- Temperature: 10–30 °C
- Toxicity: Toxic to pets
About Yellow yam
Dioscorea cayenensis, commonly known as attoto yam, is a tropical yam species prized for its edible tubers. Its climbing stems can reach several meters in length, covering structures or growing over other plants with its heart-shaped leaves. It is an excellent choice for tropical or subtropical gardens where a productive and ornamental plant is desired to grow on pergolas or trellises.
Native range
West and Central Africa
Care tips
This species prefers full sun to partial shade and requires well-draining soil rich in organic matter. Watering should be regular and abundant during the growing season, reducing it during dormancy. Be sure to provide sturdy support for its climbing stems to develop properly. A common mistake is a lack of support, which can result in disorganized growth and reduced tuber production.
How to save a dying Yellow yam
- Warning signs
- Yellowing or wilting leaves, soft stems, soft or moldy tubers.
- First aid
- Remove damaged leaves and stems. Check the tuber: if firm, repot in well-draining soil. If soft, cut rotten parts and apply fungicide.
- What kills it
- Overwatering causing tuber rot, lack of light, or compacted soil suffocating roots.
- Can it be saved?
- Yes, if the tuber still has healthy parts and the problem's cause is quickly corrected.