CL. You can sow spinach now. The right time is early August and again towards the end of August in sheltered spot. But NOT in the shade. Thin out and hoe and in early winter the leaves can be harvested till end April.
I have spinach in summer since 22 years and they dont get bolted. :D. I think three things are imported: Put spinach in the sun but behind or between other plants, like fennel, so they have some shade. Sandy soil is what they like and EVERY DAY they want WATER, WATER, WATER. (unless it is raining a lot, of course- but this year the soil is SOOOO dry) and you can pick endless ;D ;D .But winter spinach is also nice to grow.
