Novice seeking help/advice on spindly home-grown seedlings

Hi,

Further to my little intro last weekend.... it’s been a busy week with work and home schooling, last weekend I thought my seedlings looked ok if a little spindly but I’m now quite concerned about them.

Having just returned from a trip to the local nursery/farm shop, it’s quite clear that my home growns are all quite weak and spindly but I just don’t know what I’m doing wrong, other than I fell short on watering on a couple of days due to my shifts.

I’m going to attempt to post photos of leeks, Brussels and butternut squash. Each started off in the first week of April in modular pots. I transferred the leeks and Brussels to the single pots shown about a week ago, the squash only today having found them in a dry state! They’re variously moved around between a Wilco’s mini greenhouse to the side of the house, a similar greenhouse inside the living room (at the patio door) and the windowsill of the shed. I’m struggling to keep them somewhere that they get light but not intense heat from the sun, the leeks especially may have had too much sun/heat.

Anyway, I’ll attempt to attach some photos and would appreciate all and any comment. Thanks, George.

Ok, thank you JayG.

Would you go so far as to say that I could lift the plastic covers off the Wilco’s greenhouses and simply leave all this lot outside day and night on the shelves?  The main issue would be finding a place of shade as our garden/yard gets the sun pretty much the whole day but they’ll get the sun once at the plot anyway as there’s no shade on it at all. Also, do you think there’s any kind of plant food etc that they would benefit from now? 

Many thanks again, George.