For the second consecutive year my carrot crop has been destroyed by root fly (not grown in the same area of the vegetable garden this year). Adjacent rows of parsnips were unaffected last year, but I'm not sure if they are affected this year. Does the pest persist in the soil ? I don't plan to grow carrots next year, but is it likely to recur when I try again or is there anything that can be done to prevent it?
I installed a greenhouse for the first time this year. I have tomato plants grown from seed and from purchased seedlings and they are all failing: the plants are small and the foliage is speckled and quite yellowed. I have tried feeding them tomato food with no success. I recently put in a cucumber plant bought at a plant sale and the same has happened. Is this because it's too hot, too cold, too much direct sun, or what would you suggest? Many thanks