The end of the tomato season is not the end of the harvest. With good harvesting and proper storage, you can enjoy fresh tomatoes for 6-8 weeks after the last harvest. Green fruits also ripen later. Here are all the techniques.
When to harvest tomatoes
Optimal harvest time:
- For immediate use: when fully ripe (red, soft skin)
- For 2-3 days of storage: when 90% ripe (red-yellow)
- For shipping or longer: when 50-70% ripe (orange)
End of season (October, with the forecast of the first frost): harvest all, including green ones. But only fruits that have already started to turn red or are in the "breaker" phase (yellowish).
Completely green fruits will not ripen, use them for jam, "fried green tomatoes" or compote.
Ripening of green fruits
Classic way of ripening green tomatoes:
- Wash them and dry
- Place in a cardboard box in one layer
- Add 1-2 apples or bananas (they release ethylene, which triggers ripening)
- Cover with paper towels
- Keep at 15-20°C, in the dark
- Check every 2-3 days, use ripe ones, remove rotten ones
Storing fresh fruits
Rules for fresh tomatoes:
- NEVER in the refrigerator (below 12°C destroys aroma)
- At room temperature, stem up
- In one layer, so they don't squeeze each other
- Away from apples and bananas (unless you want to ripen them faster)
Shelf life:
- Fully ripe: 3-5 days
- 90% ripe: 7-10 days
- 50-70% ripe: 2-3 weeks
Preserving and freezing
Three classic methods of long-term storage:
1. Drying:
- Cut in half
- Dry in a dehydrator (60°C, 8-10 hours) or in the sun (3-5 days in a greenhouse)
- Store in oil with spices or in sealed jars
2. Freezing (easiest):
- Wash, dry, cut into pieces
- Freeze in bags
- Shelf life: 12 months in the freezer
- Use: only for cooking (loses structure)
3. Canning (mixed, sauces, ajvar):
- Wet heat 100°C 15 minutes
- In sterilized jars with metal lids
- Shelf life: 2 years in a cool and dark place
Storing seeds for next year
For open-pollinated (non-hybrid F1) varieties you can store seeds:
- Choose the best fruit (healthy, without disease)
- Cut it, squeeze out seeds into a jar with a little water
- Ferment for 2-3 days (mucus separates)
- Sift through a sieve
- Dry on paper towels 5-7 days
- Store in a sealed jar at room temperature
Shelf life: 4-6 years with proper storage.
"Seeds that you collect yourself are adapted to your garden, climate, and soil. Every year they are better.", Slovenian seed saver
Proper harvesting + storage + preservation means 12 months of tomatoes from your own garden. Full self-sufficiency is achievable even in a small greenhouse.
Greenhouse for full self-sufficiency
20 m² greenhouse covers the annual need of a family of 4 people for tomatoes, peppers, and cucumbers. Our Profi model.
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