A chance to clean up the grounds and then a later opportunity to check out the night sky with amateur astronomer Barbara Caseau is coming up Thursday, Oct. 24 at Polly Hill Arboretum. Grounds volunteer day is from 9 a.m. to noon and is a basic fall sprucing-up event. Bring gloves and dress for the weather.

Later that evening from 6:30 to 8:30 p.m. stretch your backyard astronomy skills and get a good look at the night sky, especially a chance to see Venus, which is quite visible this time of year. Bring your binoculars or telescope for this free stargazing event. Cloud date for the backyard astronomy session is Friday, Oct. 25.

Call the arboretum at 508-693-9426 or visit pollyhillarboretum.org to let them know you plan to come to either or both events.