I’ve become interested in trying to start seeds indoors; it seems January would be a perfect time for this. Buying plants is so expensive! Can you give me some pointers about starting seeds indoors?
Why Start Seeds Indoors?
Starting seeds indoors gives your plants a critical advantage by extending the growing season. In the Mid-Atlantic, frost-free dates typically range from mid-April to mid-May, depending on your exact location. By starting seeds in January, you ensure your seedlings are strong and ready for transplanting once the soil warms. This method also allows gardeners to grow a wider variety of plants than what might be available as store-bought seedlings.
Essentials for Indoor Seed Starting
Before you begin, gather the necessary supplies:
• Seed trays or small pots: These provide individual spaces for seeds to germinate.
• Seed-starting mix: A lightweight, well-draining medium specifically designed for germination.
• Grow lights: While a sunny windowsill can work, grow lights ensure consistent light exposure, crucial for healthy seedlings.
• Heating mats: Many seeds germinate faster and more reliably in warm soil.
• Plant markers: Labeling helps track your varieties and germination progress.
Best Vegetables to Start Indoors in January
Several vegetables benefit from an early indoor start, allowing for a robust spring harvest:
1. Tomatoes (Solanum lycopersicum):
• Varieties like ‘Brandywine’ and ‘San Marzano’ are popular in the Mid-Atlantic.
• Start seeds 8-10 weeks before the last frost date to ensure healthy transplants.
2. Peppers (Capsicum annuum):
• Bell peppers and hot varieties, such as jalapeños, need a long growing season.• Begin seeds 10-12 weeks before the last frost.
3. Broccoli, Cauliflower, Kale (Brassicas):
• Cool-weather crops like these can be transplanted as early as mid-March.
• Start seeds 6-8 weeks before the last frost.
4. Lettuce (Lactuca sativa):
• Quick germinators that thrive in cooler weather, these can go into the garden early under row covers.
• Start seeds 4-6 weeks before transplanting.
Best Flowers to Start Indoors in January
Flowers started indoors in January can bring early and sustained beauty to your garden. Consider these favorites:
1. Petunias (Petunia x atkinsiana):
• These colorful, hardy annuals are ideal for the Mid-Atlantic’s fluctuating spring temperatures.
• Start seeds 10-12 weeks before transplanting.
2. Snapdragons (Antirrhinum majus):
• A staple in spring gardens, snapdragons thrive in the region’s cool spring weather.
• Begin seeds 8-10 weeks before the last frost.
3. Impatiens (Impatiens walleriana):
• Perfect for shady areas, impatiens bring vibrant color to low-light spots.
• Start seeds 8-10 weeks before transplanting.
4. Marigolds (Tagetes):
• Known for their pest-repellent properties, marigolds are a practical
and attractive choice.
• Start seeds 6-8 weeks before transplanting.
Step-by-Step Process
(1) Prepare Your Containers: Fill seed trays or pots with a moist seed-starting mix, leaving about half an inch of space at the top. (2) Plant Your Seeds: Follow seed packet instructions for depth and spacing. Lightly cover seeds with soil and mist with water. (3) Provide Warmth and Light: Place trays on heating mats and under grow lights for 12-16 hours daily. (4) Water and Monitor: Keep the soil consistently moist but not waterlogged. Use a spray bottle for gentle watering. (5) Thin Seedlings: Once seedlings have their first true leaves, thin them to one plant per cell or pot to avoid overcrowding. (6) Harden Off Before Transplanting: Gradually expose seedlings to outdoor conditions over 7-10 days before planting them in the garden.
Want to learn more about gardening or spend time with people who like plants? For more information go to the Capitol Hill Garden Club website at capitolhillgardenclub.org. Questions on gardening? Send your questions to [email protected]
