Fenugreek
Trigonella foenum-graecum
Also known as: Methi, Helba, Hulba, Greek hay, Bird's foot
Quick facts
- Category
- herbs soft
- Difficulty
- beginner
- Days to harvest
- 25 to 45 days
- Harvest type
- continuous production over weeks or months
- Spacing
- 10 cm between plants
Environment
- Temperature
- 10–28°C
- pH
- 6 to 7.5
- EC (hydroponic)
- 1 to 1.6 mS/cm
- Daily light
- 12 to 20 mol/m²/day
Climate and zones
- USDA zones
- 6 to 11 (winter low around -23°C or warmer)
- Frost tolerance
- tolerates light frost
- Season
- cool (spring and fall crops)
Viable growing environments:
- outdoor year-round (in zone)
- outdoor in growing season (annual)
- unheated greenhouse / hoop house
- heated greenhouse
- indoor (heated home)
- indoor hydroponics under grow lights
USDA zone bounds reflect outdoor year-round survival. Anywhere outside the bounded zone range, this crop still grows as an annual in the warm months (outdoor_seasonal), under cover (greenhouse), or indoors under lights.
Growing systems
Fenugreek works in:
- deep water culture (rafts)
- NFT channels
- media bed (ebb and flow)
- wicking bed
- soil bed
Growing media
The substrate the roots sit in. Choice depends on the system (clay pebbles don't fit NFT channels; rockwool isn't used in media beds) and the crop (fenugreek works in the media listed below).
| Medium | pH effect | Water retention | Bacterial surface |
|---|---|---|---|
| Rockwool (Mineral wool) | alkaline until pre-soaked | very high | low |
| Coco coir (Coconut coir) | slightly acidic | high | moderate |
| Perlite (Expanded volcanic glass) | neutral / inert | very low | low |
| Soil-based mix (Potting soil) | varies by source | high | high |
Bacterial surface area matters for aquaponics: clay pebbles, lava rock, and pumice double as biofilter substrate. Low-surface media (rockwool, perlite, pea gravel) work in hydroponics but need a separate biofilter in aquaponics.
Nutrient demand by stage
NPK ratios are relative weights at each growth stage; the nutrient mix calculator scales them to absolute grams or ml. EC targets shift through the plant's life: seedlings need a much lighter solution than fruiting adults.
| Stage | N | P | K | EC target (mS/cm) |
|---|---|---|---|---|
| seedling | 1 | 1 | 1 | 0.8 |
| vegetative | 2 | 1 | 2 | 1.4 |
Aquaponics suitability
Compatible with typical aquaponics nutrient profiles. 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 fast, dual-purpose hydroponic crop providing both fresh leaves (methi greens) and, if allowed to mature, seeds. EC 1.0-2.0 mS/cm. pH 6.0-7.5. Temperature: 15–25°C (cool to moderate; tolerates some heat but bolts faster in warm conditions). Moderate light (DLI 12-18 mol/m2/day). NFT, DWC, or media bed systems work. From seed to leaf harvest (methi greens): 3-4 weeks as microgreens, 5-6 weeks as full-sized leaves. For seed production: 90-120 days to pod maturity. The fresh leaves have a milder, more herbal version of the seed's aromatic quality. For kasuri methi (dried fenugreek leaves), harvest leaves, rinse, and dry in a dehydrator at 35–40°C; the dried leaves store for months and are used as a finishing herb in Indian curries. Succession plant every 3 weeks for continuous methi greens. The plants fix nitrogen (like other legumes) but may need supplemental N in hydroponic media without Rhizobium. Fenugreek is pest-resistant and trouble-free. For South Asian cooking enthusiasts, fresh methi greens are one of the most valuable personal-use herbs: expensive at Indian grocers, unavailable at regular supermarkets, and easy to grow.
Verified against: indian-council-of-agricultural-research, rhs-uk, icarda-syria. Last reviewed 2026-05-15.