I have grown a lovely plant 30cm tall but I noticed today that it has rotted where the stem touches the soil. Can I rescue it?
I've not tried this, but you could cut the stem off well above the rotted section and either put it in water or well-drained moist compost to try and root it. If you try the latter, you will need to keep it covered, either in a big polythene bag or in a propagator until it roots.
I'm afraid there's no chance of rescuing the plant complete with rotted section; it does suggest that your plant was overwatered and/or cold.
Thanks Alina, I will give it a go. I had so much top growth I kept watering it without checking the pot.
What is going wrong, this is the third I have found this week. Is it all down to over watering?
It could be damping off, too. To prevent that, reduce watering and improve air circulation - difficult indoors, I know. Are you using sterile compost? If not, try a copper fungicide drench on what you do use. Also, try opening up the compost with perlite, and only water from the bottom. Good luck!
Thanks Alina, I was hoping that once it got to this size I did not have to worry so much about damping off etc When it stops raining I will get some perlite and re pot the others.