Dutch Bucket
Hydroponic Jicama: Growing Mexican Yam Bean in Water Culture
Learn to grow jicama hydroponically for this crisp, sweet Mexican tuber. Complete guide covering long growing season management and harvest techniques.
Introduction to Hydroponic Jicama
Jicama (Pachyrhizus erosus), also called Mexican yam bean, produces crisp, sweet, water chestnut-like tubers. Growing jicama hydroponically allows cultivation in any climate, overcoming its tropical requirements and long growing season.
Understanding Jicama
Jicama is a legume producing large edible tubers. The vines grow 10-20 feet and must be trellised. Only the tuber is edible - seeds, leaves, and pods are toxic. Tubers can reach 50+ lbs but are best harvested at 1-5 lbs for optimal texture.
Growing Requirements
Long Season Crop
Jicama needs 5-9 months of warm growing conditions. This is its biggest challenge. Hydroponic systems with climate control make this possible year-round anywhere.
Tropical Conditions
- Temperature: 75-85°F optimal, minimum 60°F
- Doesn't tolerate frost
- High light: 14-16 hours daily
- Humidity: 60-80%
System Configuration
Large containers (15-25 gallon) needed for tuber development. Dutch buckets with perlite/vermiculite mix work well. Deep DWC possible but challenging to harvest. Strong trellis essential - vines are vigorous.
Nutrient Management
As a legume, jicama fixes nitrogen but benefits from complete nutrition: N 100ppm (can be lower due to nitrogen fixation), P 50ppm, K 200ppm, EC 1.5-2.0. High potassium supports tuber development. pH 5.8-6.8.
Flower and Seed Pod Management
Critical: Remove all flowers and seed pods as they appear. Flowering signals the plant to stop tuber growth. Continuous flower removal keeps energy directed to tuber development. Remember: seeds and pods are toxic.
Harvesting
Harvest after 5-9 months when vines begin to yellow, or harvest smaller tubers earlier. Carefully remove from growing medium. Brush off debris - don't wash until ready to use. Peel tough outer skin before eating. Store cool and dry for 2-3 months.
Safety Warning
Only the tuber flesh is edible. Seeds, leaves, stems, and pods contain rotenone and are toxic. Keep plant parts away from children and pets.
Related: Root Vegetables Guide
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