If you have a bad case of garden envy, Polly Hill Arboretum has the cure. Its annual end of the season plant sale is from 10 a.m. to 2 p.m. on Saturday, Sept. 13. If you’re already the master of your horticultural universe, there’s the arbormaster training workshop on Monday, Sept. 15.

And if you want to learn more about how you could put all those dandelions you mowed to good use, you might like next Saturday’s workshop on edible and medicinal plants that runs on Sept. 20 from 1 to 3 p.m. Whichever way you look at it, Polly Hill cultivates your inner green thumb.

To find out more, call 508-693-9426 or visit pollyhillarboretum.org.