The Hall County Spring Plant Expo is set for this weekend, Friday, April 5 and Saturday, April 6. The annual event is sponsored by the Hall County Master Gardeners and the Hall County office of the University of Georgia Cooperative Extension. It will be from 8:30 a.m. to 5 p.m. Friday and from 8:30 a.m. to 4 p.m. Saturday in the agricultural center at 1855 Calvary Church Road in Gainesville.