What is your soil Ph? Perrenial clovers like a soil ph of 6.5, crimson will do well on a 6. This could be why your clover is not doing well. Do a soil test. Follow the directions of the soil test by amending your soil. Durana is one of the best perennial clovers out there, but is slow to establish, that's why some people will plant patriot clover with it, becauses it establishes more quickly. I really like yucchi arrowleaf as an annual, if you can find it. Once you have your soil where it needs to be, getting clover started is as simple as sewing it. Maintaining perennial clovers can be challenging come spring because of weeds and grasses, that's why I believe its very important to begin with a weed and grass free field in the fall by spraying ahead of time before weeds and grasses have seeded out.