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Coleus Plant Seeds:
Guide to Storing, Sowing and Germination

Updated: February 25, 2023

Coleus plants are known for their vibrant and bold foliage. They are popular as houseplants and outdoor ornamental plants. If you are a fan of coleus plants, you might want to try growing them from seeds. In this article, we will guide you through the process of storing, sowing and germinating coleus plant seeds.

Storing Coleus Plant Seeds

The first step in growing coleus plants from seeds is to store the seeds properly. Coleus plant seeds are tiny and delicate, so they require special care. Here are some tips for storing coleus plant seeds:

  • Store the seeds in a cool, dry place. Ideally, the temperature should be around 50°F to 60°F (10°C to 15°C). Avoid storing the seeds in areas with high humidity or direct sunlight.
  • Use airtight containers or bags to store the seeds. This will prevent moisture and air from getting in and damaging the seeds.
  • Label the containers with the date and variety of the seeds. This will help you keep track of your seed collection.

Sowing Coleus Plant Seeds

Once you have stored your coleus plant seeds properly, it’s time to sow them. Here’s how to do it:

  • Fill a seed tray or small pots with seed-starting mix or potting soil. Make sure the soil is moist but not waterlogged.
  • Place 2-3 seeds in each pot or cell. Cover the seeds lightly with soil.
  • Mist the soil surface with water to keep it moist.
  • Place the seed tray or pots in a warm, bright location. Coleus plant seeds require temperatures of around 70°F (21°C) to germinate.
  • Keep the soil moist by misting it regularly.

Germinating Coleus Plant Seeds

Germinating coleus plant seeds can take anywhere from 7 to 14 days, depending on the variety and growing conditions. Here are some tips for successful germination:

  • Keep the soil moist but not waterlogged. Overwatering can cause the seeds to rot.
  • Once the seeds have germinated, thin out the weakest seedlings. Leave only one strong seedling per pot or cell.
  • Fertilize the seedlings once they have their second set of true leaves. Use a balanced fertilizer with equal amounts of nitrogen, phosphorus and potassium.
  • Harden off the seedlings by gradually exposing them to outdoor conditions before transplanting them. This will help them adjust to the new environment.

FAQs

How long do coleus plant seeds last?
Coleus plant seeds can last up to 2 years if stored properly.

Can I grow coleus plants from cuttings?
Yes, coleus plants can also be propagated from stem cuttings.

Do coleus plants require full sun or shade?
Coleus plants prefer partial shade to full shade. They can tolerate some morning sun but not intense afternoon sun.

How often should I water my coleus plants?
Water your coleus plants when the soil surface feels dry to the touch. Avoid overwatering as it can cause root rot.

In conclusion, growing coleus plants from seeds is a rewarding and fun experience. By following these simple steps, you can enjoy the beauty of these colorful plants in your home or garden. Happy gardening!