[header] How to care for dahlias [title] Ensure you have a growing season of at least 120 days. [step] You can't plant dahlias until the soil in your garden is over 60 degrees fahrenheit (16 celsius), so planting can occur between april and june, depending upon your location. You can usually plant these tubers around the same time as you plant your tomatoes. 
[substeps] These tubers prefer morning sunlight, and they can benefit from shade in the hottest hours of the afternoon. Check your hardiness zone at http: // planthardiness.