Then water the entire garden with a sprinkler for at least 2 hours. Planting too early in the fall may cause the seeds to start growing, then when cold weather arrives, seedlings will freeze. In warm-winter locations, it is best to time the sowing right before the rainy season, usually around late fall or winter. Fall and Winter Vegetable Gardening in the Pacific Northwest — PNW 548, a free download PDF publication by Oregon State University, University of Idaho, and Washington State University. Planting Fall crops generally do better when started from transplants than from seed. They love hot, dry summers and will bloom over a long period. grow larger. Pile and firm the planting beds. If you sow seed in late spring or summer, the … Fall seeding is a good choice if you live in an area that experiences cold or freezing winters, and the ground freezes for more than 60 days. The Organic Seed Grower: A Farmer’s Guide to Vegetable Seed Production by John Navazio (2012) Fall and Winter Gardening. If grown from seed … Transplants should always be used for growing tomatoes and peppers. If you do spot a seedling emerging early, be sure to cover it with mulch. Though you have a shorter growing season, you’ll get a jump start on spring growth, and should see color 2-4 weeks earlier than with spring planting. Allow the area to dry for several days, and it will be ready to plant. Best Flower Seeds to Plant in Fall – Perennials BLANKET FLOWER. Grass Seed Planting in the Fall. Fall Planting Wildflower Seed in Colder Climates. The time of the year is an important factor when sowing grass seed. Flowers are like a large daisy with bright and bold markings in red, yellow and gold tones. These are fairly tall growing to about 2 feet high.