Grow bag seedling leaves dying.WHY? with pics

[zazen999]

Taff, im using washed commercial well composted potting soil. The roots and stems are fine.

The roots and stems might not necessarily show any distress from the soil; I think you need to grow them on a bit in seed compost before transplanting them into your bags.

[teakdesk]

What temperature does it get to during the day ?

Your seedlings look just like some cabbage I sowed and left inside (ie in heat) after they had germinated.

Lettuce do not like it hot; I don't think spinach do either.

Taff, im using washed commercial well composted potting soil. The roots and stems are fine.

I'm intruiged by this. If you bought "commercial" potting compost - why did you wash it ?

Was it to get rid of nutrients from compost designed for potting-on to turn it into low nutrient seed compost ?

Or some other reason ?



.

[growbags]

What temperature does it get to during the day ?

Your seedlings look just like some cabbage I sowed and left inside (ie in heat) after they had germinated.

Lettuce do not like it hot; I don't think spinach do either.








I'm intruiged by this. If you bought "commercial" potting compost - why did you wash it ?

Was it to get rid of nutrients from compost designed for potting-on to turn it into low nutrient seed compost ?

Or some other reason ?



.

Taff im using tap water and ive grown potatoes and tomatoes in the potting no prob.

teakdesk, I washed it so it drains better in the 1 metre long grow bag and to make it low nutrient seed compost. Mostly for the drainage. I was going to add liquid nutrient when bigger.

(ie heat) can heat alone do this? without strong direct sunlight? we are in the first week of autum

[growbags]

What temperature does it get to during the day ?

Your seedlings look just like some cabbage I sowed and left inside (ie in heat) after they had germinated.

Lettuce do not like it hot; I don't think spinach do either.








I'm intruiged by this. If you bought "commercial" potting compost - why did you wash it ?

Was it to get rid of nutrients from compost designed for potting-on to turn it into low nutrient seed compost ?

Or some other reason ?



.

teakdesk, I think I found the problem.

Growing Lettuce and How to Grow Lettuce in Hot Weather

says:

"Nearly all problems you may encounter when growing lettuce are caused by hot weather. The most common problem, apart form the plants bolting to seed prematurely, are brown edges on the leaves. This happens especially if you get very hot weather after a cool spell."

Ill try again in a few weeks.

Thanks to everyone who helped out