Seedling help

[Brian]

This sowing made 17th February, assortment of BCSS list. They have been planted in sealed plastic pots, on warm base half the day in a propagator.

There is a second pot I dare not post!

They seemed fine until I opened up today for a peep. Those white seedlings were lovely green a couple of days ago.

Too warm? Why and help!!!

[esp]

Does the container get direct sun at any time? That could cause the inside of a sealed container to heat up dramatically.

[Brian]

Thanks for the comment. On Thursday or Friday there is a chance there was direct sun for the first time, just peeking through but not for long. The seedling were put in a nice bright light in the conservatory, it’s possible the sun peeked through and my suspicion was as suggested, baked seedling but not entirely sure. The conservatory was certainly hot for the first time this year so sealed in a plastic container on a gently heated pad ..... hmmm ... I’ve no doubt answered my question.

Growing from seed is so rewarding but such a precise exercise. I’ve been trying it on and off for ten years or more, slightly different methods and wonder if I will ever learn.

[AnTTun]

Light levels might have something to do with your problem but... I had same thing happening to my seedlings under artificial light... I still have no clue why they've turned white (and died) because the light was the same all the time. Sorry I can't help, my conclusion was something like 'it has to happen sometimes'.

[Brian]

Thank you AnTTun, some consolation that it happens elsewhere. Either too hot or too bright or both is my best conclusion. I don’t think it is the sealed container scenario per se as I have used thAt method successfully in the past.