Would you advise me to re-use the compost from my growbag that contains my blighted tomatoes?
Or should I get rid?
Spread it around as mulch, the tomatoes will of used up most of the nutrients but it still improves the soil structure.
Blight only survives in plant tissue not compost.
I'm planning on riddling out the tomato roots frmo the builders bulk-bag planters I was using to recover the soil/compost/manure for potting out my asparagus.... I'll burn any bit of tomato I find but the rest might as well be put to use....
chrisc
Once the tomato is dead, the blight fungus will be dead with it. Sling it in the compost, keep the light out, and you can't go wrong.
I make up my own potting mixture for tomatoes and always try to recycle the compost, even if the tomatoes have had blight. I try to use it well away from where i grow tomatoes, just in case anything nasty still remains in the compost. This is normally as a planting mix for flowers or as a mulch. Use tomato compost as a mulch on your flowerbeds regularly and it will soon improve the soil no end.