Filled it with diesel and mowed grass. It's still growing 4-6" about every 5-6 days. I think it's been two years since I used fertilizer. Lots of rain and heat is making it thrive which is unsual for this time of year here. We close on 3 acres beside our property next Thursday and it's got 24-30" of clover to mow. I have a 60" brush cutter lined up for that project.