I'm planning on having open-range chickens and need to know about organic grass. I tried searching Google for this info but couldn't find any info. One person in the local coop store said that the grass most grass seeds are from was most likely grown with chemicals, but by the time they were harvested and dried out and planted in the new ground the chemicals should generally be gone. Is that true? Do they spray grass seed with chemicals? Do people buy organic grass seed, and if so, where do you buy it? Any info on this is appreciated. Thanks!