Taro
Colocasia esculenta
Also known asKalo · Eddo · Cocoyam · Dasheen · Arvi · Gabi · Talo
Environment
The bounded range this crop tolerates.
Climate and zones
- USDA zones
- 9–13 (winter low around -7°C)
- Frost
- frost sensitive (dies at first frost)
- Season
- year-round tropical
Growing systems
Root mass: very heavy. Thin-channel systems can't hold this crop.
Growing media
| Medium | pH effect | Retention | Bacterial surface |
|---|---|---|---|
| Expanded clay pebbles (LECA) | neutral / inert | low | high |
| Lava rock (Scoria) | neutral / inert | low | very high |
| Soil-based mix (Potting soil) | varies | high | high |
Nutrient demand by stage
NPK ratios are relative weights. EC targets shift through the plant's life.
| Stage | N | P | K | EC (mS/cm) |
|---|---|---|---|---|
| seedling | 1 | 1 | 1 | 1 |
| vegetative | 2 | 1 | 3 | 2 |
Companion-growing notes
- Heavy uptake of potassium. Co-grown crops with the same demand will end up deficient even at "correct" EC.
- High transpiration. Regular reservoir top-ups needed during fruiting.
Aquaponics suitability
Compatible
Fish waste provides enough nitrogen for healthy growth. Supplemental potassium, calcium, and iron may still be needed depending on fish stocking density.
Care notes
A tropical crop for warm, wet conditions, which aligns well with aquaponics. Taro is one of the few crops that thrives in waterlogged, saturated conditions; wetland taro (grown in flooded paddies, similar to rice) produces the highest yields. Media beds, large containers (20 L), or direct planting in shallow, warm water near fish tanks. EC 1.5-2.5 mS/cm. pH 5.5-7.0. Temperature: 25–35°C (strictly tropical; growth stops below 15°C). Moderate to high light (DLI 16-25 mol/m2/day). Plant corm pieces (with a growing point) 5–10 cm deep. The large, ornamental leaves emerge on tall petioles (60–120 cm). Harvest corms after 6-12 months when the leaves begin to yellow and decline. Each plant produces 1–5 kg of corm depending on variety and conditions. The tolerance of waterlogging makes taro uniquely compatible with aquaponics: it can grow with its roots directly in fish system water, which would drown most other crops.
Legality
| Jurisdiction | Status | Notes |
|---|---|---|
| Florida | restricted | Florida Category I invasive (Wildland species); cultivation discouraged near waterways source verified 2026-05-13 |