I'm on planting my third batch of spinach this year, but the first done haven't done so well. They look great up to about 5 leaves, then start getting scorched looking patches and a couple have gone completely crispy brown and given up the ghost entirely - why is this and what can I do? I keep them watered and they have the sun for part of the day - would they be best completely in the shade? They're in pots/window boxes in my back yard.
On a better note, I had my first harvest today

Some mixed lettuce leaves I planted at the end of March, which should (fingers crossed) come again - had them for tea...yum! What was/will be everyone else's first late spring/summer crop?
Also, I have some (well, 2) potatoes in - they were sprouting in the cupboard and I had some compost from last year, so what the heck, not losing anything - and hey presto! they've gone mad in an old compost bag! But does a lot of green top mean diverted energy so not so much potato bottom? Complete beginner question of the day - how do I know when they will be ready to dig up and eat??
Thank you
