My tomatoes are rapidly succumbing to blight this week, despite hot sunshine now. I have three maxi growbags with three in each. Sungold are the worst, although since they began ripening first, we have eaten quite a few of them already. Progress is much slower for the my other two, Ailsa Craig, a huge crop this year, and a newish variety - Glacier - which is supposed to ripen earlier but didn't.
Can I use the compost from the growbags for anything, or must I throw it away?