Wondering why this year’s milkweed shoots are coming out in different places than last year’s? Uncertain which forsythia buds are flowers versus leaves? Is there a difference? Lois Stack helps answer typical questions Signs of the Seasons volunteers may have when setting out to observe plants in spring. Lois is a professor of sustainable agriculture at UMaine and a Cooperative Extension specialist in ornamental horticulture. For years, she offered viewers gardening tips on the WABI-TV’s “Weekend Gardener” program and also wrote a regular horticulture column for the Kennebec Journal. See Lois’ spring observation tips.