Zinnias are famous for their rich tropical colors, and ‘Under The Sea’ Zinnia mix is the perfect example! Zinnias are one of our most popular wildflower varieties at American Meadows. They grow rapidly from seed - about 6-8 weeks after seeding - offering long lasting blooms for weeks on end over the summer, right up until frost. Plant in full sun, and you’ll have loads of beautiful flowers with plenty to cut and bring inside. Zinnias can be grown in any zone.