Sowing under glass – Definition & Detailed Explanation – Gardening Techniques Glossary

I. What is sowing under glass?

Sowing under glass, also known as starting seeds indoors, is a gardening technique where seeds are planted and grown in a controlled environment, typically in a greenhouse, cold frame, or even on a windowsill. This method allows gardeners to start their plants earlier in the season, giving them a head start on growth before transplanting them outdoors.

II. When should you sow seeds under glass?

The timing for sowing seeds under glass will vary depending on the specific plant you are growing. In general, seeds should be started indoors 6-8 weeks before the last frost date in your area. This allows the plants to grow to a suitable size before being transplanted outside once the weather warms up.

III. How to prepare for sowing under glass?

Before sowing seeds under glass, it is important to gather all the necessary supplies. This includes seed starting trays or pots, a good quality seed starting mix, seeds, and a watering can. Make sure to sterilize your containers before planting to prevent the spread of diseases.

Fill your containers with the seed starting mix, moisten it with water, and then plant your seeds according to the instructions on the seed packet. Place the containers in a warm, sunny location or under grow lights to encourage germination.

IV. What are the benefits of sowing under glass?

Sowing seeds under glass offers several benefits to gardeners. It allows for earlier planting, which can extend the growing season and result in larger, healthier plants. Starting seeds indoors also provides better control over the growing conditions, such as temperature and humidity, leading to more successful germination and growth.

Additionally, sowing under glass can help protect young plants from pests and harsh weather conditions, giving them a better chance of survival once they are transplanted outdoors.

V. What are some common mistakes to avoid when sowing under glass?

While sowing seeds under glass can be a rewarding experience, there are some common mistakes that gardeners should avoid to ensure success. One common mistake is overwatering, which can lead to root rot and other issues. Make sure to water your seedlings only when the soil feels dry to the touch.

Another mistake to avoid is planting seeds too deeply. Most seeds need light to germinate, so make sure to plant them at the recommended depth on the seed packet. Finally, be mindful of temperature fluctuations and provide adequate ventilation to prevent mold and disease from taking hold.

VI. How to care for seedlings after sowing under glass?

Once your seedlings have germinated and started to grow, it is important to provide them with proper care to ensure their health and vitality. Make sure to keep the soil moist but not waterlogged, and fertilize your seedlings with a diluted liquid fertilizer every 2-3 weeks.

As your seedlings grow, they may need to be transplanted into larger containers to allow for more root growth. When it is time to transplant them outdoors, make sure to harden off your seedlings by gradually exposing them to outdoor conditions over a period of 7-10 days.

By following these tips and techniques for sowing under glass, you can successfully start your plants indoors and enjoy a bountiful garden come spring and summer. Happy gardening!