That’s quite a lot of tomato plants to have in your windowsill for the next 3months.
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Growing some early toms 2018
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These are my September sown Red Robins.
I've read somewhere that they:
1) Can be grown in 9cm or 12cm pots.
2) Will reach 25-30cm.
3) Can cope well with low light levels, possibly even with winter light levels.
Which sounds too good to be true but also perfect winter experiment
These are both from one seed. It got over 50cm in December and I cut the upper half and repotted it. The pots are 13cm.
They are on an almost south-facing windowsill, but even there the light level during winter was not good enough. It looked weak, leggy and sickly most of the winter (you can see light deprived lower leaves and sunburnt middle leaves on the bigger plant).
The bigger plant is now around 70cm, the smaller one just under 30cm.
The smaller plant grows nicely, it's well-branched and doesn't have the tendency to grow up.
They both have a lot of buds now and starting flowering (some buds on the bigger opened yesterday).
Conclusion: Sowing in September with hope for December/January tomatoes doesn't work. Sowing in December or early January could work. I think that the problem with autumn sown plants is that the light level gets lower every day which can be confusing and growing after winter solstice would be more natural for them.
If they don't have enough light, they will grow much over 30 cm.
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Good work on the over wintered plants, I'm sure you'll get a pretty early crop anyway, and you can also get some decent cuttings or sideshoots from them now to give you plenty of plants for this summer! Do you have any artificial lights or just relying on natural sunlight? I think there's probably techniques using lights to trick your plants into flowering and fruiting using specific day lengths if you wanted to get scientific on it, but it's fun just to see how they cope with your own conditions.
I nursed a tomato plant (sunchocola) through the winter last year, it was a fully grown plant that I took pity on and hauled into the house in October, but the big downfall of it was that it acted as an ideal overwintering home for whiteflies too! I ended up with a bit of an infestation in the glasshouse later on from that- a problem I hadn't encountered before.
Just a heads up anyway!
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This is how mine are looking this morning.
On the sitting room windowsill:
4 Shirley plants, 3 big ones from last summer, which were cut down when they finished fruiting and sprouted again from the bottom. These all have at least 1 small fruit, just about ready to eat (I ate one yesterday). The empty pots are also from last year's tomatoes - I've left the pots there for now as the capillary matting is very smelly if you take the pots away! The smaller plant was a sideshoot from one of last year's plants, planted on 24th October and grown under lights until it was too tall. It has 3 trusses of flowers, but most have not set fruit and at the moment there are only 4 green tomatoes. There is a radiator under the window and I think that is why a lot of the bottom leaves look unhappy.
Under lights in the spare room:
There are 2 Shirley plants sown on 13th January in 3 litre pots. These were looking unhappy (you can see that the bottom leaves are shrivelled in places) but look much better now they have been potted on. The small ones in the black pots are Balconi yellow sown on 6th February. The other pot is Balconi red - I sowed 2 pots of these on the same day as the yellow (packets bought on same day 3 years ago and were fine last year), but nothing happened, so I sowed 2 more seeds on 22nd February. This plant germinated on 5th March, nothing is showing in the other pot so I put a couple more seeds in there yesterday. I have no idea why these have behaved so differently.
The other plants are carrots (Nantes Frubund) sown at the end of January, pea shoots (Onward) and french bean Sonesta sown in December, which is looking a bit yellow (they are yellow beans) but is starting to produce small pods.A life is like a garden. Perfect moments can be had, but not preserved, except in memory. LLAP. - Leonard Nimoy
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