How To Keep Greenhouse Warm In Winter

Winter can be a challenging time for greenhouse owners. With the cold weather outside, it can be difficult to maintain the warm and cozy environment that plants need to thrive. However, with a few simple tips and tricks, you can learn how to keep greenhouse warm in winter and ensure that your plants stay healthy and happy throughout the season.

Choose the Right Location

When it comes to keeping your greenhouse warm in winter, location is key. You want to choose a spot that is sheltered from the wind and gets plenty of sunlight throughout the day. This will help to trap in heat and keep your plants warm even on the coldest of days.

Insulate Your Greenhouse

Insulation is another important factor in keeping your greenhouse warm in winter. Adding insulation to the walls, roof, and floor of your greenhouse can help to trap in heat and prevent it from escaping. This can be especially important if you live in an area with harsh winter weather.

Install a Heating System

One of the most effective ways to keep your greenhouse warm in winter is by installing a heating system. There are many different types of heating systems available, including electric, propane, and natural gas. Choose the one that is best suited for your needs and budget.

Use Thermal Mass

Thermal mass refers to materials that can absorb and store heat, such as water, stone, or concrete. By incorporating thermal mass into your greenhouse design, you can help to regulate the temperature and keep your plants warm even when the heat source is turned off.

FAQ: How to Keep Greenhouse Warm in Winter

What is the Best Temperature for a Greenhouse in Winter?

The ideal temperature for a greenhouse in winter depends on the type of plants you are growing. Generally, most plants prefer temperatures between 60 and 70 degrees Fahrenheit during the day, and 55 to 65 degrees Fahrenheit at night.

Can I Use a Space Heater to Keep my Greenhouse Warm?

While space heaters can be effective at heating small areas, they are not recommended for use in a greenhouse. They can be a fire hazard and may not provide enough heat to keep the entire space warm.

Do I Need to Ventilate my Greenhouse in Winter?

Yes, it is important to ventilate your greenhouse in winter to prevent excess moisture and mold growth. However, you should be careful not to let too much cold air in, as this can lower the temperature and harm your plants.

Other Tips for Keeping Your Greenhouse Warm in Winter

– Use a thermometer to monitor the temperature inside your greenhouse – Cover windows with plastic or bubble wrap to trap in heat – Use a fan to circulate warm air throughout the greenhouse – Add a layer of mulch to the soil to insulate plant roots – Consider using a greenhouse cover or blanket to provide extra insulation


With these tips and tricks, you can learn how to keep greenhouse warm in winter and ensure that your plants stay healthy and happy throughout the season. By choosing the right location, insulating your greenhouse, installing a heating system, and using thermal mass, you can create a warm and cozy environment for your plants to thrive. Don’t forget to ventilate your greenhouse, monitor the temperature, and use additional insulation as needed to keep your plants happy and healthy all winter long.