If you have some dead snakes you're planning on using, I can tell you that once I saw some weed that had been fertilized with dead snakes and its leaves had the soft smooth texture of snake skin. It was quite surprising that you could really see the influence of whatever the snake had decomposed into in the texture of the boo. It even looked like it was 'scaley'!
But, I hope you don't deliberately kill a snake just to add a novel slant to the nature of your grass, you're not planning on that are you?
