Spinach crop profile: sowing, temperatures, and harvest
OrtoClima crop rules for Spinach.
Spinach crop profile
Reference profile for starting spinach, checking temperature thresholds, and estimating harvest timing.
Crop summary
- Starting method: direct sowing
- Direct-sowing soil threshold: 4 C
- Transplant soil threshold: not available
- Night minimum: 0 C
- Frost buffer: -20 days
- Heat stop: 26 C
- Harvest range: 35-55 days
- Indoor lead: not planned
How to start it
Spinach is normally started by direct sowing. The main check is soil temperature: wait until it reaches at least 4 C.
Temperature thresholds
The operating thresholds are: direct-sowing soil at least 4 C; night minimum around 0 C.
The frost buffer allows considering starts up to 20 days before the cautious date, when the other thresholds are also met.
When maximum temperature exceeds 26 C, the window tends to close quickly.
Harvest timing
The estimated harvest for spinach usually falls after 35-55 days from a useful sowing date.
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.
- The negative frost buffer indicates a more cold-tolerant crop, as long as soil can be worked.
FAQ
Should spinach start from seed or transplant?
The recommended starting method is direct sowing. The main thresholds are direct-sowing soil 4 C, transplant soil not available, and night minimum 0 C.
How long does spinach take to harvest?
The indicative harvest range is 35-55 days. The local page can move these dates according to the municipality and climate.
Which temperature threshold matters for spinach?
The frost buffer is -20 days and the heat stop is 26 C. These values describe the crop's general needs; municipality pages adapt them to local climate.