Just about every week, on Wednesday or Thursday, Providential Gardener sends an eNewsletter with recent RI environment-related news and the next weeks' featured events.
It's free to subscribe, and it will keep you informed. It also posts to WhatGrowsOnRI on Facebook and ProvGardener on Twitter.
NOTE: You MUST check at least one box to get a newsletter! I always send the WEEKLY UPDATES, and I am now setting up most of these options.