[Weston grower]

I decided to have a go at growing onions from seed this year. They have been in trays in the greenhouse for a few weeks now and have reached the 4 inch high grass stage. How do I know when they are ready to plant out into the plot? - weather permitting!!

Grateful for any advice.

Regards WG

[Salmo]

Wait until they have developed 2 side leaves. They should then be robust enough to transplant.

Mine were sown middle of February. They have sat in a cold frame not doing a lot and they have a second leaf. With warmer weather I would expect them to develop quite quickly now. Probably plant out in a couple of weeks.

Better to be patient than plant too soon. Too small and they may sulk or even give up when they are transplanted.

[Weston grower]

Thanks for that. I'll give them a bit longer.

Regards WG