91-98 days. Annual Flower. Serena Angelonia seeds grow some of the most elegant, yet durable flowers available in any garden. Serena seeds boast dense, lush spikes flourishing in a seasonal mix of blues, violets, whites, that promise to keep a healthy garden buzzing with important pollinators. Native to the warm tropics of the Caribbean, Angelonia Serena seeds will thrive in a variety of both humid and dry gardens. Serena Angelonia seeds mature into tidy 15-18" tall uprights with heavily-floreted spikes that serve as a perfect alternative to traditional Snapdragons. Pelleted seeds.