Garden Scheme
Pachyrhizus erosus
Jicama is a warm-season annual vine grown for its crisp roots, with harvest arriving in fall after a long growing period. Its 10-foot height makes it a vertical crop rather than a low, space-filling vegetable. Place it where its support will not shade shorter crops, and keep the root zone reachable from a path for planting, watering, and harvest.
Space Jicama 12 inches apart, measured center to center (30 cm).
The mature spread is about 3 ft (90 cm), so plants set at that distance grow together into a closed canopy over the bed.
Treat 12 inches as a planning baseline — cultivar and local growing conditions shift the final footprint.
Set jicama at the back or north side of a vegetable bed, or along a fence or trellis that can carry a tall vine. Give each plant its own vertical route instead of letting stems run across adjacent crops or a walkway. A narrow bed with access from both sides is especially useful: the vine can rise from one edge while the planting area remains open for tending and lifting the roots at season’s end.
Plant jicama 1 foot apart, center to center, but reserve a wider working zone around the support as the vines develop. The mature spread is about 3 feet, so avoid crowding it between other full-size crops or against a path edge. In a row, keep supports aligned and leave enough aisle space to reach the soil without stepping into the planting area when harvest time arrives.
Use a full-sun position with moderate, steady watering. A location close to a hose line or irrigation run makes it easier to maintain moisture through the long season without repeatedly disturbing the root area. Keep the support and surrounding bed clear enough that foliage does not block access to the base of each plant.
Jicama needs a notably long stretch of warm weather: seed-grown plants may require five to nine months before roots reach eating size. Build it into the earliest warm-season part of the plan and leave the space occupied through fall rather than expecting a quick turnover. Where the warm season is short, the crop may still fill its support while producing smaller roots by harvest.[1]
Treat jicama as a season-long commitment in the vegetable plan. Its tall vine and late harvest can hold a bed or trellis position while faster crops come and go nearby, so avoid placing it where it would interfere with succession planting. Keep its vertical structure separate from lower crops that need uninterrupted sun and easy access.