This past weekend I planted herbs and tomatoes in containers. I have been putting the plants outside for the day and bringing them in at night. I consider Memorial Day to be the time when it's safe to plant out tender vegetables such as tomatoes. We've had frosts as late as that here in Western Massachusetts, so wait to leave your container gardens outside overnight until then. Continue to bring them back indoors overnight as you've been doing.
Daytime temperatures are warm enough, but the nights are still a little chilly.
Even though there's been no frost lately, the cold temperatures can still cause damage, especially to the flower buds, which eventually become fruit. Pernell Gerver, who gardens in Chicopee, welcomes gardening questions on all aspects of home gardening, indoors and out. Used with permission.