Seedling advice

KeenOnGreen

I potted up some of our seedlings a few days ago, from seed trays into individual pots.  They are in our unheated greenhouse, but it's very warm in there due to the warm weather.  They are really flagging and some have died, so I moved them outside to a shady spot during the day.  I've noticed that the seedlings which are in propagators in the greenhouse are doing OK, although they are still in the seed trays in which they were originally planted.

Would you recommend continuing to move the transplanted seedlings to a cooler spot each day, outside the greenhouse, or should I put the seedling pots into propagator tray in the greenhouse, to keep up humidity.  Any other tips would be helpful.  Last year we lost many seedlings for the same reason, and due to unusually high temperatures in Spring.  

UpNorth

What are the seedling's?  Some don't like transplanting.

KeenOnGreen

Chard, Kale, Cornflower, Spinach, Kohl Rabi.  I think it’s excessive heat in the greenhouse that is the main problem.  I thought that putting the transplanted seedlings into a propagator might at least keep up the humidity until they get established. 

Lyn

I’ve not grown the veg you mentioned there, but most veg seeds don’t need a propagator, I’ve never used one, maybe it’s  brought the seeds on too quickly thus making them weak.
how big were they when you pricked them out,   I sow all my seeds in just MPC you can leave them in that until they are much bigger. 
If you have big seeds, sow them in individual pots right from the start so they don’t need pricking out.  I do this with cucumbers, tomatoes , beans etc,  you can leave them until they are bigger then. 
I use paper pots for plants that don’t like root disturbance, I know cornflowers don’t like it, maybe best sown direct into the garden. 

Dovefromabove

I sow chard, spinach, kale and cornflowers direct into the garden. You get sturdier plants that way. Never grown kohl rabi  but it’s a brassica ... shouldn’t need heat. 
Id sow another batch ... outside. Perfect time for it.