Taking care of your plants as a stretch of dry weather continues. Managing thistle in your yard. When it's a good time to trim trees. How much water a tree needs. Identifying buckthorn and how to get rid of it. Preventing crabgrass. Preparing the lawn for winter. Fall is a great time at the Arboretum. Bringing plants inside for the winter. Pruning blue spruce. How to get a soil test.Learn more from U of MN horticulturist Mary Meyer. ext.umn.edu