All of the recommended species require abundant sunshine. Coastal species are tolerant of saline conditions and wind and need more porous soils than upland species. No significant insect pests or diseases are known. Bidens can be mass planted and even crowded to some extent. All Bidens can be easily grown from seeds.
Seedlings grow quickly and can be brought to flower during the first season.
Most can also be grown from terminal cuttings. Use a rooting hormone to enhance success.