Sulphur Cosmos - Dwarf Mix

The Sulphur Cosmos does well in hot, arid climates. It is native to Central America and can grow in temperatures up to and above 100 degrees Fahrenheit. The Cosmos sulphureus has a smaller flower than the Cosmos bippinatus. This flower will bloom later in the season than many others. When located in parched climate areas it can be planted in the fall. In colder, more moist climates wait to plant this seed until spring, when the ground warms up. Otherwise the seed will sit dormant in the ground and rot, because heat is a necessary precursor to germination for this species. All Cosmos attract birds and make good cut flowers. This flower does better if planted in soil that is more infertile. Fertilizing it will cause overgrowth and instability. It does not need to be heavily managed and can sustain itself when neglected. It will survive if started indoors, but will do better if it is planted directly outside.

Details:
  • Common Name: Sulphur Cosmos - Dwarf Mix
  • Latin Name: Cosmos sulphureus
  • Type: Flower
  • Color: orange,yellow
  • Cycle: Annual
  • Origin: Introduced
  • Height: 12-24"
  • Planting Season: Spring
  • Bloom Season: Spring-Fall
  • Germination: 7-21 Days
  • Seeds Per Pound: 63,000
  • Seeding Rate: 35

*Planting and Bloom Season. Please remember that Planting and Bloom seasons will differ for each variety depending on the location and climate conditions where they are being planted. Please refer to the USDA Plant Hardiness Map provided in our FAQ section for specifics on how to determine the best time of year to plant for your specific situation. The information provided below is based on experienced agricultural practices throughout the Willamette Valley of Oregon and is applicable to Zones 7-10 only.