Hi - I grow cosmos pretty successfully in rather lousy soil. It's gravely and full of clay right up against my house so I don't know far the roots can dig in but oddly they do well. I planted some in a terra-cotta pot that's about 12 inches high with potting soil and they have grown really tall - over 12 inches- no buds at all ! What do you think ?
Hi - I grow cosmos pretty successfully in rather lousy soil. It's gravely and full of clay right up against my house so I don't know far the roots can dig in but oddly they do well. I planted some in a terra-cotta pot that's about 12 inches high with potting soil and they have grown really tall - over 12 inches- no buds at all ! What do you think ?