Use a chopstick, knitting needle or your fingers to make planting holes. Set plants, then gently tamp soil around roots.

Bioactive terrariums are more than just a pretty display—they’re living, self-sustaining worlds in miniature. What sets them apart from simple planted terrariums is the addition of tiny inhabitants.

Upper Valley gardeners whose green thumbs are aching to grow something, and who are dying to get their hands dirty, will have ...