Gardengnome's Garden
Cosmos
Genus: Cosmos.
Species: Cosmos bipinnatus.
Planted in front flowerbed 2007 in west corner. This plant is considered a half-hardy annual, although plants may re-appear via self-sowing for several years. The plant height varies from two to four feet. The cultivated varieties appear in shades of pink and purple as well as white. Germination takes between 7 and 10 days at the optimal temperature of 75 degrees fahrenheit; flowering begins between 60 and 90 days after germination. It prefers a soi pH between 6.0 and 8.5; flowering is best in full sun, although partial shade is tolerated.
