We have found the majority of tomato plants in our greenhouses are infected with what appears to be late blight. The stems have brown patches, the leaves are starting to shrivel and the fruit is rotting.
This year we planted early potatoes (Foremost) alongside a main crop (Maris Piper). The earlies seemed to do well but all of a sudden the main crop leaves all dried up and we were left what looked like twigs. We cut these down and it left hollow, woody stalks. We have dug up most of the ground and there weren't many potatoes at all. Last year we had Maris Pipers and I know we didn't harvest them till at least mid-September. I assumed something was wrong but credited it to the extra wet weather we've been having along with the lack of heat.
Now the tomatoes seem to have this late blight I'm wondering if this could be what affected the potatoes? I've checked the blight map but there is nothing for our post code at all. The potatoes that we've dug up do not show any signs of damage, at least none that we didn't have last year (small holes created by a garden pest of some description). Is it still okay to eat them if this is what has happened?
I read that it's not as common for tomato plants in greenhouses to get this but our outside plants look okay at the moment. I think we're going to lose all the plants we had in the greenhouses, we'll be putting them in our green bin for disposal. Can blight be transferred to chillis and cucumbers, which are also in the greenhouse? Do we need to treat the greenhouse with anything before putting anything else in there next year, or treat it with something now?
If anyone has any advice it would be much appreciated.