I have raised pure-bred black angus cattle for nearly 40 years now. I know what moldy hay is when I see moist, black stuff and sometimes even what might be white ash in the middle of the black spots and it's usually accompanied with warm or warmer temperatures. I know this is bad, especially for bred cattle. I feed large bales of bent grass straw, 24/7 in a covered feeder and I supplement with alfalfa 3 times/week. I have some small bales of alfalfa left that I purchased in the field about 18 months ago. They are stored in a 3 sided covered barn with the North side open. Lately I've been seeing a light blue/green mold on the cut ends of the alfalfa. The bales are dry thru and thru, but these ends have that mold. No internal mold exists. The mold is only where the bale was exposed to the air. In other words, the mold is not present where the edge of the bale backed up to another bale or to the back of the barn, but only where the air could get to it. Is this mold bad, OK, extremely bad or ?? Thanks in advance, steve daiker <personal data hidden>