Outdoor temperatures plummeted at the beginning of this week; we went from 28 °C to just 8°C in one day. That is quite the temperature shock, I tell you. And the weather forecast said that we will have temperatures as low as 5°C at night. Anything below 20°C stops tomatoes from ripening, and below 10°C, they effectively start dying and are more likely to rot than to ripen. So I had to dig out my outdoor tomatoes, which are still about 90% green without a trace of red.
There are several ways to deal with this. The easiest way is probably to make chutney, like Giliell mentioned. I do not like green tomato chutney, and I have enough pumpkin mustard to satisfy my condiment needs for a long time. And this is estimated to be 8 kg of tomatoes, which would be way too much for a condiment anyway.
I tried these three methods in those years in which I managed to protect my outdoor tomatoes from blight:
- Cut whole clusters, even with a part of the stem, and hang them in the greenhouse/indoors. This works best for indeterminate varieties where the plants are huge and where the whole clusters tend to ripen at once, and when the fruit is at full size and just about to ripen.
- Dig out the whole plants, tie them up, and hang them upside down in the greenhouse/indoors. This works best for determinate tomatoes that make small plants, and the fruits are just about to ripen, too.
- Dig out the whole plants, cut off all non-fruit-bearing vines and most of the leaves, and put the roots in a bucket with slightly wet but not soggy soil. This works best for determinate tomatoes when the plants are manageably small and the fruit might need a bit more time to start ripening.
And since I grew determinate tomatoes this year, and I am not sure how much time the fruits still need, I used method 3. I had 8 plants, so I put 3 or 2 in a bucket. The soil at this stage only serves as a buffer against the plants losing moisture too quickly, so it does not matter that they are cramped in there. I also had to support the plants with wooden stakes in order to be able to handle them more easily.
These methods are based on my personal experiences, so the results I got over the years might have been just a fluke. I am not inclined to search for scientific studies about any of this. There is not much else I can do anyway, except toss it all. This way, I hope that at least some, if not most, ripen. Last time I did this bucket method, about 50% of the fruit ripened enough to be edible, and I would call that a win this year, too. Tomatoes are expensive.