Starting a garden in Toronto’s climate can be rewarding, but it requires careful planning. If you’re new to gardening or want a head start on the growing season, starting seeds indoors is a great way to ensure strong, healthy plants. Learn about successfully starting seeds inside and transferring them outside when the time is right.

Choosing the Right Seeds and Containers

Selecting the right seeds is the first step to a thriving garden. Look for varieties suited to Toronto’s growing season, such as tomatoes, peppers, and herbs. Use seed trays or biodegradable pots to allow for easy transplantation.

Ensure your containers have proper drainage to prevent overwatering. A seed-starting mix is ideal, as it provides the right balance of nutrients and aeration for young plants.

Providing the Best Growing Conditions Indoors

To help seeds germinate successfully, they need the right balance of light, warmth, and moisture.

• Light: Place seedlings near a sunny window or use grow lights for at least 12-16 hours per day.
• Temperature: Most seeds need a consistent temperature of 18-24°C to sprout.
• Moisture: Keep the soil consistently damp but not soaked. A spray bottle works well for gentle watering.

Using a humidity dome or plastic wrap can help retain moisture and improve germination rates.

Hardening Off: Preparing for Outdoor Transition

Before moving your seedlings outside, they must be gradually exposed to outdoor conditions. This process, called “hardening off,” helps prevent shock and allows plants to adjust to temperature changes.

• Start by placing seedlings outside in a shaded area for a few hours a day.
• Gradually increase sun exposure and time outdoors over 7-10 days.
• Avoid transplanting during extreme weather conditions like strong winds or heavy rain.

Transplanting Your Seedlings Outside

Once the risk of frost has passed—typically around mid-May in Toronto—you can transplant your seedlings into the garden.

• Choose a cloudy day or late afternoon to reduce transplant stress.
• Water seedlings well before and after planting.
• Space plants according to their growing needs for optimal airflow and root development.

Maintaining Your Garden for a Thriving Season

After transplanting, continue to water, mulch, and fertilize as needed. Regularly check for pests and provide support for growing plants like tomatoes and beans.

For more gardening tips and starting seeds inside or to explore homes with beautiful outdoor spaces, contact us today!