I have not because I've always had good clover/chicory growth in the Spring from the seed planted with my Fall plot of wheat & oats. But if you go with something suitable for late Spring/Early summer planting I see no reason it would not work. In my mind almost anything would be better than letting that grass grow. Perhaps millet? It can be planted at almost any time of the year. Check your state's ag web site to see what might be suitable for planting in June/July.