The Northern Neck Master Gardeners’ 29th Gardening in the Northern Neck seminar is March 25 at the White Stone Church of the Nazarene from 8:45 a.m. until 3:00 p.m.The theme of the seminar is “In Your Own Backyard.” Featured speakers include author and garden educator Barbara Pleasant, biologist and pollinator conservationist Heather Holm, and pest control expert Ed Olsen. Log on to nnmg.org for registration information.