Cosmos Flower Sun Or Shade. May 18 2021 Cosmos are tolerant of most soil pH levels but grow best in neutral to alkaline soils. Jan 11 2017 Cosmos sulphureus varieties which include plants in the Ladybird Dwarf and the Klondyke Mix range in shades of yellow to orange to scarlet with a bushy low-growing habit.
How to Plant Cosmos. Give them a spot with lots of sun 8 to 10 hours at a minimum unless you are willing to accept fewer flowers and spindly growth. Is the Cosmos a Perennial.
Grows well from seed.
After spreading the seed we recommend compressing the seed into the soil. Most varieties of cosmos grow tall. Cosmos atrosanguineus has dark red chocolate-scented flowers. Most Cosmos reseed themselves quite readily grow very quickly and produce 3-4 double daisy-like blooms in pink red white and lavender.