They have stretched to much looking for light. They need more light. You should not need to tie them up, if a seedling gets enough light and a gentle breeze they will self support.
Don't worry too much but can you give them more light, they need it bad!
Thank you. Unfortunately I grow them on my window.. So I can't really give them more light.. Maybe I should give them some light in the night, could that help?
@JendaMitrus, hi, Think Different are autos so they can be under light for 24 hr day till you harvest.
That wastes elec so ideal is around 18-20 hr light per day. Yes, you can put a light on it at night, but it needs to be a grow light.