Utah State University
This fact sheet describes snapdragon cut flower production in Utah. Snapdragons can bloom spring through fall, with the highest quality stems produced during cool temperatures. Cultivars are grouped based on their blooming response to light and temperature. High-quality stem production can last up to 21 weeks by using multiple groups, staggered planting dates in a high tunnel and field, pinching, and pruning techniques.
Lewis, Maegen; Stock, Melanie; Maughan, Tiffany; Black, Brent; and Drost, Dan, "Snapdragon Cut Flower Production in Utah" (2021). All Current Publications. Paper 2187.