What’s up at the Greene Hill Food Co-Op these days, nine months after its soft opening? The store will open for a third day during the week starting Oct. 8. That means there will soon be Monday, Wednesday, and Saturday hours. Also, this Saturday from noon to 6 pm, members will be priming the back wall of the co-op building to prep it for a mural. (If you’re interested in volunteering, email email@example.com.) And finally, the co-op is holding a free fall party on Saturday, Oct. 6, from noon to 6 pm at the Putnam Triangle. This is the only day non-members will be able to shop at the co-op! For all the details on the fall party, go here. And if you’d like to join Greene Hill, go here.