Yam
Dioscorea alata
The true tropical yam: a climbing vine that swells a huge starchy tuber underground, a staple across Africa, Asia and the Caribbean.
Quick tip
Plant tuber pieces and give the vigorous vine a tall, strong trellis. It needs a long warm season; lift the big tubers before cold. Not the same as sweet potato.
☀️ Full sun↔ 12″ apartZones 9–12⏳ ~300d
When to plant Yam
- Transplant outMove seedlings into the garden 2–4 weeks after your last spring frost.
At a glance
Botanical name
Dioscorea alata
Category
Vegetables
Hardiness
Tender
Sun
Full sun
Spacing
12″ apart
Days to maturity
~300 days to harvest
Hardiness zones
USDA zones 9–12
Rotation family
Roots
Soil pH
6–7
Companion planting
Plant near
🌱 A rampant climbing tuber - let it scramble up corn or a stout trellis while legumes feed the soil.