Direct sown solanaceae 2026 in southern Finland, peppers, tomatoes, eggplants, tomatillos and ground cherries

Spring has been warm here, by our standards. That means few days over 20C and average for the month so far just over 10C. That combined with the extremely dry last 2 months, (total 20mm of rain for march and april) my plots were tilled early and with the weather permitting I could also start sowing early. First in mind were ofcourse peppers and eggplants that I would protect with cloth anyway and those I sowed 14-15.5, almost week earlier than previous years. Because the forecast looks fairly good for the rest of the month I also sowed tomatoes, tomatillos and ground cherries, even if they are going to be unprotected. There is still a change that there could be frost at the end of month when they have emerged, but generally frosts at the turn of the month are quite rare and with the current forecast it would need quite a turnaround for it to get cold enough for frosts. I still expect that there will be ground level temperatures in the 0-2C range if it cools as expected. I still rather take risk with the frost as this might be my change to sow them when ground is still cool and thus get some separation in emergence. Plus possible volunteers don’t get any advantage this way.

Tomatillos and ground cherries. There are about 10 meters of bed for tomatillos and 15 meters for ground cherries. Couple meters of tomatillos is new varieties that I also sowed directly because I hate to grow them to transplat and had the change direct sow them early. I have no idea if they would need longer season, but if this isn’t enough then I might not want them anyway. All varieties are sweet, same as those sown from my own seed. Ground cherries I have about 15-20 from transplants that I will transplant later once the ground is warmer. There are few new varieties that I managed to acquire and some from 3 lobed fruit.

Tomatillo sown.

Peppers. This year I direct sowed less because I have quite a few from transplant to make seed increase from new crosses and I needed to prioritize. Still some 20 meters of bed. Half are at least partially wilds and I will gradually phase out pure domestic lines. They will live on through crosses. No baccatums direct sown this year.

Also tomatoes there are less of because I have many transplants from more advanced lines to make a seed increase. Still some 17 meters of bed direct sown, of which most are half wilds. Similarly with peppers the plan is to phese out pure domestic lines.


Also eggplants I don’t have as much as last year (about 7-8 meters of bed direct sown), but at the same time selection will be harder as I’m not using clear plastic to start with. Last years small trial the same way had some success so I’m quite confident now that I could start a little earlier, even if doesn’t speed up the process more than few days. Would have to be quite bad summer for no plant to produce something.

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Do the Tomatillos have enough time to ripen until the first frost in your climate? If so I might try this next year in mine(In my climate the last frost is usually early-mid May and first frost in early October)

Yes, the fastest do ripen even direct sown. Although I don’t have that many years to compare to. I have direct sown this way only 2024 which was rather warm year. Then first ripened at the end of august and there was one plant that ripened it’s whole crop within couple weeks. That was something like 20-30 fruits between 50-100g so not too shabby. That year I also sowed considerably later, must have been around 24.5 when realistically I could sow around week earlier and avoid frosts if there isn’t sudden change in weather in the forecast. I would say it needs just slightly more time compared to fastest tomatoes. So probably might be quite tight some years in terms of getting ripe fruit, but I expect to get some to ripen most years and can work from there. Maybe couple of years to condense the current fastest traits into one population and then can work to make new ground. I would think that in your climate they have a good change of making ripe fruits even direct sown every year. If you’d like I can send you plenty to trial? If I post it on monday in express, it might be there later next week.

Thank you for the offer! Sadly I don’t have any space left

Ok, next year then. Just ask if you want some.

Thanks for doing this work. I have my own direct sown tomato patch (lots of seeds, planning to thin to maybe 20 or 30 plants), as well as a small direct sown TPS patch (maybe 700 seeds, expecting low success).

This is my 3rd year of direct sown tomatoes. I was feeling adventurous and had extra seeds so I also threw some seeds in improbable spots in my garden. We’ll see what happens.

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Really interesting to hear you’re transitioning into growing eggplants and other solanaceae without the tarp. The growing conditions will start til be more similar to mine - or most normal gardeners

Not really, peppers and eggplants still with the black film and cloth. Not really realistic to go without either as it’s been really close every time. I can take cloth off earlier if it looks like it get’s warm enough in the long term. Tomatoes and tomatillos have gone without before and also ground cherries this year as they are so fast. I did sow 1m2 of peppers and eggplants without just to see what happens, how much they would need, or in the unlikely case, how warm it would have to be for them to be early enough. I’m thinking whether I should make some crazy mass sowing without anything and then see if I find some 1 in a million plant that I could overwinter indoors. That has the problem with weeds. I don’t think I could manage that much weeding and thinning in timily manner. Gotta practise weed management before going there. With eggplants there might be some prospects with african eggplant cross. At least the year I grew the cross (the one made the wrong way) it was way more vigourous than any of the other F1s I had at the time so maybe there is something there.

Yesterday had the first tomatoes and tomatillos up, but some must have been already the day before. So about 1 week to emerge, which was quite expected with reasonable weather. After sowing there were some nights of frost, but last week it’s been around 10C at night and around 20C during day. Not as lucky with next weeks weather, although based on recent forecast frosts are quite unlikely. Still no more than around 5c at night and 15C during day before going little up the week after. Fairly good forecast for making selection and don’t have to hurry with thinning/weeding that much.