There are many deadlines gardeners need to know about. More insight on dormant seeding as winter is in full swing. Caring for plants in Arizona. Preparing plants indoors before bringing them outside in the spring. Steps to take to protect plants from animals. Tree planting tips. The benefits of a snake plant. Checking seeds for quality. How to tell one a lilac bush is dead. Growing milkweed. Learn more from horticulturalist Mary Meyer at extension.umn.edu.