My cauliflowers were coming on nice & strong, healthy in appearance and thriving until about a week ago when I noticed the plants failing.They have continued to do so. No sign of attack on the plant above ground so I assumed that perhaps the roots were being attacked. I pulldd the smallest plants and discovered a small reddish insect within the roots. Any advice on treatment? Nearby cabbages are fine.
My Iris are finishing up at present, should they be lifted & stored or can they be left in the ground for the winter or can they be moved & when?