Thank you both for replies.I did use appropriate soil - but did wonder if the pot was too big to start with as was a very small plant.what size plant are you putting into 60l/100l pots?

Big thank you -will try again!

Thanks probably guilty of over watering..should I water in the tray rather than top? also could it be the summer house is too warm once they are at this stage?

I have blueberries in pots that are 5 years old and still no fruit.what am I not doing? They did have a growth spurt last year!

Can anybody advise how I get seedlings (2 leaves) to the next stage.as they keep dying. I have tried individual pots,modules and trays. Thanks