Fennel crop profile: sowing, temperatures, and harvest
OrtoClima crop rules for Fennel.
Fennel crop profile
Reference profile for starting fennel, checking temperature thresholds, and estimating harvest timing.
Crop summary
- Starting method: direct sowing or transplanting
- Direct-sowing soil threshold: 10 C
- Transplant soil threshold: 10 C
- Night minimum: 5 C
- Frost buffer: 0 days
- Heat stop: 28 C
- Harvest range: 60-90 days
- Indoor lead: 35 days
How to start it
Fennel can be started either by direct sowing or by transplanting. Direct sowing follows the soil threshold, while transplanting lets the first stage happen indoors.
For fennel, start seedlings indoors about 35 days before transplanting.
Temperature thresholds
The operating thresholds are: direct-sowing soil at least 10 C; transplant soil at least 10 C; night minimum around 5 C.
The frost buffer is neutral: it adds no days to the cautious date.
When maximum temperature exceeds 28 C, the window tends to close quickly.
Harvest timing
The estimated harvest for fennel usually falls after 60-90 days; with transplants, the first stage can happen earlier.
This is a practical average: local climate, variety, exposure, and water management can move the first and last harvest dates.
Seasonal notes
- It can also work in autumn when local climate stays within the thresholds.
- The heat stop is relatively low, so late sowing can become risky in hot-summer areas.
FAQ
What starting method is used for fennel?
The recommended starting method is direct sowing or transplanting. The main thresholds are direct-sowing soil 10 C, transplant soil 10 C, and night minimum 5 C.
How long does fennel take to harvest?
The indicative harvest range is 60-90 days. The local page can move these dates according to the municipality and climate.
Which temperature threshold matters for fennel?
The frost buffer is 0 days and the heat stop is 28 C. These values describe the crop's general needs; municipality pages adapt them to local climate.
When should I prepare fennel seedlings indoors?
Yes. Start seedlings indoors about 35 days before transplanting.