Squash seed leaves going bad

Hello, is this sun scorch?

 

Looks like it. Did you put plants that had been growing undercover outside, or let plants growing undercover dry out?

 

It looks like only the seed leaves have been affected so the plants should be ok.I have similar one of my squashes but since planting out with a bit of temporary protection it seems to be just fine.

Looks like time they were potted on or planted out.

 

They were originally sown on a windowsill and then in to the fly away greenhouse.

I've put them outside in direct sunshine this morning, will this help??? What do you mean by protection? From the wind, slugs, sun?

 

They've got plenty of water and there isn't lots of roots coming through the bottom of the pot

 

Protection from cold wind and low night temperatures until they get established and hardened off. Putting them outside in a sheltered spot during the day is a good idea.

The scorch possibly happened in the blow-away as unless they are well ventilated on sunny days they can become very hot.
In my opinion, you'd have been better to put each squash into individual pots as soon as large enough to handle rather than grow on in the one pot as you risk root damage once they get larger. You'll maybe find that although the roots are not yet showing through the base they are well entangled around the sides.

 

Thanks Dave, they've never spent a day in cold winds so I would assume that they got too hot. Could I have made it worse by wetting the leaves when watering also? It's only the seed leaves that have succumbed however.

How big a pot for each plant please Dave?

This has definately been a lesson learnt!

 

They would probably prefer to be watered from below (sit in a tray of water for 5 to 10 minutes). All that "cucumber" family are prone to stem rot and although they like lots of water they don't like getting it on their stems. Cucumbers themselves are redounded for this, the rest of their relatives, including Squashes, somewhat less so.

 

Thank's Kristen, never heard that before. I was just spraying everything in the flyaway with the hose on the 'mist' setting. Oh the shame!

 

Ah, well "Mist" will keep them humid, and that's no bad thing.

But watering the pot, itself, would be better from below (or if from above then avoid getting the stem wet, as bast as you can)

 

I prick out seedlings into 3.5" square pots and then onto 6" pots before planting out. I think that if you have been misting during very sunny days in the blow-away that's most likely what caused the scorch.
I sowed my squash on 29 April and planted out on 31st May but they still have some protection. I removed the glass covers today and will remove the rest of the glass next week.

Last year I planted out on 22nd April but lost the lot due to the horrible weather that followed so I've done all my sowing and planting later this year.

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