How To Grow Coreopsis From Seeds

Coreopsis Tinctoria is a popular garden flower that is easy to grow and care for.

This species is native to North America and has a long blooming period, making it a favorite among gardeners.

Growing Coreopsis from seeds is a great way to save money and ensure a continuous supply of flowers.

Below are a few steps to grow Coreopsis from seeds. 

Materials Needed:

  •  Coreopsis seeds
  •  Potting soil
  •  Containers with drainage holes
  •  Sunlight

Sowing Coreopsis Seed Indoors:

Step 1: Choose the right time to sow the Coreopsis seeds. Sow Coreopsis seed indoors 6-8 weeks before the last frost in your region.

Step 2: Fill the containers with potting soil and water it thoroughly. The soil should be moist, but not soaked with water. Make sure the containers have drainage holes to allow excess water to drain.

Step 3: Sow the Coreopsis seeds in a seed-starting formula on the surface of the soil and gently press them into. Cover the seeds with a light layer of soil, making sure not to bury them too deep. It's recommended to plant the seeds in a warm location, such as a windowsill or a greenhouse.

Step 4: Keep the soil moist during germination at 70-75 degrees F. Water the seeds regularly, making sure the soil stays moist but not waterlogged. Coreopsis seeds need light to germinate, so place the containers in a bright, sunny location. 

Step 5: Coreopsis seeds need about 15 to 30 days to germinate. Once the seeds have germinated, you can reduce the amount of water you give them, allowing the soil to dry out a little between watering. Keep the seedlings in a bright, sunny location and continue to water regularly. Or grow seedlings 3-4 inches beneath fluorescent plant lights turned on 16 hours per day, off for 8 hours at night. Raise the lights as the plants grow. Incandescent bulbs are not recommended, because they will get too hot. 

Step 6: When the seedlings have developed their second set of leaves, they are ready to be transplanted into larger containers or into the garden. Make sure to plant the seedlings in a well-drained location with plenty of sunlight. Space the seedlings about 12 to 18 inches apart.

Accustom young plants to outdoor conditions by moving them to a sheltered place outside for a week. Be sure to protect them from wind and hot sun in the beginning. If frost threatens at night, cover or bring containers indoors, then take them out again in the morning.  

Sowing Coreopsis Directly Outdoors:

  •  Plant Coreopsis in full sun with well-drained soil after danger of frost has passed. In frost free areas sow from fall to early spring.
  •  Remove weeds and work organic matter into the top 6-8 inches of soil; then level and smooth.
  •  Sow evenly and thinly cover with ½ inch of fine soil.
  •  Firm the soil lightly and keep it evenly moist.
  •  Seedlings will emerge in 15-30 days.
  •  Thin to 18 inches apart when seedlings are 2 inches tall.

In conclusion, growing Coreopsis from seeds is a simple and easy process that can bring a burst of color to your garden.

With proper care, Coreopsis plants can bloom from late spring to early fall, providing a long season of beauty in your garden.


Get Coreopsis Seeds Here

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