Tall snapdragons that finish fast—Speedy Sonnet Purple grows quickly and blooms in purple tones, making it a solid choice if you want height and color without a long wait. Plant in fall here in Alabama and you'll have substantial vertical interest through the cool months.

These snapdragons stand up to our occasional cold snaps and prefer full sun with decent drainage. Cut them back if they get leggy, and they'll branch out and keep flowering.