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 fits aquaponics well. Taro is one of the few crops that thrives in waterlogged, saturated conditions, and wetland taro grown in flooded paddies (like rice) gives the highest yields. Grow in media beds, large containers (20 L), or planted directly 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 14-22 mol/m2/day). Plant corm pieces with a growing point 5–10 cm deep. The large, ornamental leaves rise on tall petioles (60–120 cm). Harvest corms after 6-12 months as the leaves yellow and decline, with each plant yielding 1–5 kg. The tolerance of waterlogging makes taro uniquely suited to aquaponics, growing with its roots in fish-system water that would drown most crops.
Legality
| Jurisdiction | Status | Notes |
|---|---|---|
| Florida | restricted | Florida Category I invasive (Wildland species); cultivation discouraged near waterways source verified 2026-05-13 |