I planted Perkins Mommouth and what was sold as Cowhorn seed in three fifty foot rows laying side by side about the middle of May.The garden lays on the West side of the property and is approximately five feet lower than the ground immediately to the East.The garden doesn't recieve direct sun until the afternoon, and is well drained.No fertilizer was used.The seed was drilled with a seeder and germinated in short order.I think every seed of the Perkins came up and the Cowhorn ( which I believe is Clempson Spineless) was spotty.I thinned the Perkins to twelve inches.The Perkins grew like a cornfield but didn't set many blooms while the Simpson grew many.I finally thinned the Perkins to about two foot intervals but it still didn't bloom.There are no signs of paracites.I have gardened this area for the last twenty years and I have been a gardener for the last fifty.I have grown all three types of seed that I have mentioned on this plot and all of the variety has done well in the past.I always rotate crops.The ground was plowed and disked and the seed bed was prepared with a troy bilt.The rest of the crops have beared well and as usual the weeds are blue ribbon.Does anyone have any ideas?