Days to Germination:10-15 days
The Yam Bean. Jicama is a tropical plant requiring a long, warm growing season. Start it indoors 8 to 10 weeks before transplanting out after all threat of frost has passed. Soak seeds in tepid water for 24 hours before sowing in seed starter mix. Provide even moisture and strong light. Harden off the seedlings by gradually acclimating them to the outdoors over 7 to 10 days. Prepare rich, fertile beds in full to part sun. Add compost and/or well-rotted manure as necessary. It may also be direct-sown outdoors in horticultural zones 9 to 10. Do not eat Jicama leaves, pods or seeds since they contain toxic rotenone. To increase tuber production, pinch off flowers and seedpods as they appear. Harvest tubers before the first frost and store in a cool, dry cellar prior to use for up to four months. Do not add top growth or seedpods to compost piles.