I have a few first year plants and some second year plants. The second year hood is growing like crazy but is starting to have problems. Leaves are brittle and have holes in them and some tips are browning and withering. Similar signs can be seen in first year plants as well. They are all planted in composted manure, with no other fertilizer added. I have done some tests on the soil and the pH is right on but I seem to be low on nitrogen and on the high end of potassium. How is this possible? Has anyone had this problem? Any recommendations on fertilizer? I worry about my poor plants!
Thanks in advance!