Here is how I grow dahlias in my rooftop container garden!, Ive used this method for 4 years now and will continue doing it until it stops working , I plant my dahlias in April even though it wont Good Earth Bucket Planter, Tropical Red 12" X 12" Armstrong Garden Centers How To Save Marigold Seeds Easily Harvest Seeds For Spring Drip Depot Automatic Indoor Plant Watering System Amazon.com: LE TAUCI Ceramic Pots for Plants, 4.3+5.3+6.8 Inch Plant Pots, Set of 3, Planters with Drainage Hole and Saucer, Indoor Flower Pot with Hole Mesh Pad, Gifts for Mom, White : Homenote Clear Nursery Pots for Plants,3 4 5 Inch Seedling Pots with Drainage Holes Plant Pot for Planting Flower Indoor Seed Starter Pot Outdoor High Transparency with Bonus 20 Plant Labels (30 Pack)(Transparency with Lid)