Table of Contents
October is a critical month for gardeners who want to start seeds early and ensure healthy plant development through the colder months. Preparing your greenhouse properly can make all the difference in successful seed starting and plant growth.
Assess Your Greenhouse Environment
Begin by evaluating the current condition of your greenhouse. Check for any damage, leaks, or drafts that could affect temperature and humidity control. Ensure that ventilation systems are working properly to maintain fresh air flow and prevent mold or disease.
Clean and Sterilize Surfaces
Thoroughly clean all surfaces, benches, and containers to eliminate pests and diseases. Use a mild bleach solution or commercial sterilizer to disinfect seed trays, pots, and tools. Cleanliness reduces the risk of infections that can hinder seed germination.
Adjust Temperature and Humidity
Maintain a consistent temperature ideal for seed starting, typically between 65°F and 75°F (18°C – 24°C). Use heaters or heat mats if necessary. Keep humidity levels around 60-70% to promote germination without encouraging mold.
Set Up Lighting
Ensure your greenhouse has sufficient lighting for seedlings. Use grow lights if natural sunlight is limited, especially during shorter October days. Position lights about 2-4 inches above seedlings and keep them on for 12-16 hours daily.
Prepare Soil and Containers
Use high-quality seed-starting mix that drains well and retains moisture. Fill containers with soil, leaving space at the top. Label each container for easy identification of different plant varieties.
Plan Your Seed Schedule
Determine which seeds to start in October based on your planting zone and crop requirements. Refer to seed packets for germination times and adjust your schedule accordingly. Starting cooler-weather crops like lettuce, spinach, and herbs now can give you a head start.
Implement Pest and Disease Controls
Set up physical barriers such as row covers or insect screens. Use organic pest control methods if necessary. Regularly inspect seedlings for signs of pests or disease and remove affected plants promptly.
Maintain Regular Monitoring and Care
Check temperature, humidity, and light levels daily. Water seedlings consistently to keep the soil moist but not waterlogged. Use a spray bottle for gentle watering to avoid displacing young roots.
Conclusion
Proper preparation of your greenhouse in October sets the foundation for a successful seed starting season. By assessing your environment, sterilizing surfaces, adjusting conditions, and planning carefully, you can enjoy healthy seedlings ready to transplant when the weather warms.