Cosmos Bright Lights (Cosmos sulphureus ‘Bright Lights’) Seed. Fiery semi-double 2½ inch blooms in shades of scarlet orange, golden orange, gold, and yellow. Flowers are excellent for cutting, and butterflies love them. Plants grow 3-4 ft. tall and tolerate heat, drought and poor soil.
Growing Cosmos Bright Lights
Indoor Sowing: Late Winter and Early Spring.
Direct Sowing: Spring.
- From an early September sowing, it should be in full flower by December and will keep going into late February.
- If you want a head start, you can plant Cosmos indoors 4 to 6 weeks before the last spring frost in trays or pots with a good seed-starting mix.
- If you let the seed heads blow away during autumn, the cosmos might sow themselves throughout your garden.
- You can sow your Cosmos Bright Lights Seed straight into the garden, but it also grows very well in containers.
- Pinch out the tips when your seedlings reach a few cm.
- The best time to sow cosmos is in spring.
- Stake when the plants reach about 60cm.
- They can grow to a meter in height or more.
- Deadheading prolongs your flowering season.
Medical Disclaimer
Information is for educational and informational purposes only and may not be construed as medical advice. The information is not intended to replace medical advice or treatment offered by healthcare professionals.