- You will get 100 Seeds of Colorful Cosmos Wildflower Mix Flower Seeds. - Sunlight: Full Sun. - Life Cycle: 85 Days. - Watering: Medium. - Easy, brilliant colored, rapid blooming superior mix of cosmos!. - We grow cosmos each year, and the result is always an explosion of color. - Recommended seed coverage: 30 seeds per square foot. - Will grow anywhere in the U.S. Certain colors will prevail in different areas. In central Florida, the orange variety reseeds the most. Although these will do well in part sun, full sun is recommended. - Wildflower mixes should be planted in spring, or late fall for the following season. - Plant the seeds up to 1/4" deep in cultivated soil, and keep watered until seedlings emerge, then, watch them grow. If you fertilize, avoid high nitrogen content fertilizers, as this will cause too much green, and not enough color. Deadhead the spent flowers to promote new flowering growth. Trimming is necessary to prolong the bloom period. So keep the bouquets fresh, and you will be rewarded with even more flowers!.