Growing dahlias from seed can be a bit challenging as they require proper care and attention. Here are the steps to grow dahlias from seed:
- Choose a high-quality seed: Select dahlias seeds that are fresh, plump, and healthy. It is recommended to purchase seeds from a reputable supplier to ensure the best quality.
- Start seeds indoors: Start dahlias seeds indoors in late winter or early spring, about 6 to 8 weeks before the last frost date in your area. Fill seedling trays or small pots with well-draining soil and sow the seeds about ΒΌ inch deep. Cover the seeds with a thin layer of soil and water them lightly.
- Provide proper light and temperature: Place the seedlings in a warm and bright location, such as a south-facing window, and keep the temperature between 65-70Β°F (18-21Β°C). Use grow lights if natural light is not sufficient.
- Transplant seedlings: After the seedlings have developed their second set of leaves, transplant them into larger containers or seedling trays. Provide adequate spacing between the plants, about 12 inches apart.
- Harden off seedlings: Before transplanting the dahlias outdoors, it is essential to harden off the seedlings. This involves gradually exposing them to outdoor conditions over a period of 7-10 days.
- Plant seedlings outside: Once the seedlings are hardened off, transplant them into well-drained soil in a sunny location. Make sure the soil is fertile and well-amended with compost or other organic matter.
- Water and fertilize regularly: Water the dahlias regularly, keeping the soil moist but not waterlogged. Fertilize the plants every 2-3 weeks with a balanced fertilizer.
- Provide support: As the dahlias grow, they will need support to prevent them from falling over. Use stakes or a trellis to support the plants.
- Watch for pests and diseases: Keep an eye out for pests and diseases that can affect dahlias, such as aphids, spider mites, and powdery mildew. Use organic methods to control them.
- Enjoy the blooms: Dahlias will begin to bloom in mid to late summer and continue until the first frost. Enjoy the beautiful and colorful blooms!