Leafy greens and brassicas · Moderate
Celery
Apium graveolens
NFT or growing medium, steady nutrient solution.
- EC (mS/cm)
- 1.8–2.4
- pH
- 6.5
- Cycle
- long
- Difficulty
- Moderate
Sound origin
Apium graveolens
Native to Europe, where it grows wild along streams and in damp places. Known in ancient Greece, it came to France from Italy during the Renaissance.
Source: Wikipedia
What it provides nutrients
Per 100 g, raw · Celery stalk, raw
- Source of vitamin B9
- Source of potassium
% of an adult’s reference intake (EU Regulation 1169/2011). “Source of”: at least 15 % per 100 g, “high in”: at least 30 % (thresholds of EC Regulation 1924/2006).
Key steps
- Slow to germinate and tiny seed: sow on the surface, warm and moist.
- Regular watering and solution: lack of water makes the stalks stringy.
- Cutting celery (leaves) is easier than stalk celery.
- Harvest the outer stalks as you go.
In which system?
| Tower | NFT | Growing medium | Kratky |
|---|---|---|---|
Approximate calendar
| Sowing | Feb., Mar., Apr. |
| Plants | none |
| Harvest | July, Aug., Sept., Oct. |
Garden, patio, balcony: Belgian and northern French climate, earlier farther south. Estimates to adjust with your own dates.
Frequently asked questions
Celery in hydroponics: what pH?
Recommended pH: 6.5 (Oklahoma State HLA-6722 benchmark). Measure every day at the same time and correct in small doses, after adjusting the EC.
Celery in hydroponics: what EC?
Recommended electrical conductivity: 1.8–2.4 mS/cm (Oklahoma State HLA-6722 benchmark).
Celery: which hydroponic system?
Best suited: NFT and growing medium (Dutch bucket). NFT or growing medium, steady solution.
Celery: when to sow in Belgium?
Indicative window for a garden, patio or balcony in Belgium or northern France: February, March, and April. Adjust with your own dates.