Leromeanswered grow question 20 days ago The "hay" smell is actually the chlorophyll decomposing from the drying plant, which is normal to appear after around day 3 or 4 of drying weed. Once properly dried and trimmed you can jar your buds and the smell wont be there anymore. For achieving the best tasting product with least possible hay smell i found it is best to aim for a slow dry at around 55% relative humidity in a cool environment at around 18 degrees celsius / 60 fahrenheit for about 12-16 days, until the small branches on the nuggets start to snap when bending.