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15 Ultimate Tips on Growing Plants in a Greenhouse Year Round

Updated on April 9, 2013
  • Greenhouses provide an excellent environment for growing many types of plants. Many gardeners are able to enjoy their plants year round with these structures. There are many things that go into growing things year round in these structures. Everything has to be just right for the plants to thrive through any type of weather. Below are the 15 top tips to make a greenhouse a success throughout the year.

1. Location is of the utmost importance with a greenhouse that grows plants year round. The structure needs to get full sun as much as possible and this is figured on winter sun as well as spring or summer sun. If it gets any shade, it should only get in during the late afternoon hours.

2. Install the right type of greenhouse. Glass or polycarbonate is the best for year-round growing, especially in parts of the country that have wintry weather. If a gardener lives in a zone where it is warm throughout the year, more options are suitable besides just the ones mentioned above.

3. The right soil mix is important for the plants no matter what time of year it is. Start with high-quality soil and add sand, peat moss, perlite, some compost material, and in some cases clay. Sand is important for drainage, clay retains moisture and compost provides nutrients. Adjust the soil to the plant's needs.

4. Keeping an ideal temperature for growing is important. This is easy in the spring and summer, but it at times is tricky in the winter months. Heaters help, but must be monitored to make sure the greenhouse does not overheat. There are various makes and models of greenhouse heaters or heating systems to choose from for this purpose.

5. Air circulation is important for regulating the temperature and humidity in a greenhouse. If the temperature fluctuates too much, the plants will not thrive as well. Also, if the level of humidity gets too high, the moisture will condense on the leaves and can cause diseases. Fans help to create the right amount of air circulation in greenhouses.

6. All the plants need enough room to spread out and grow. If they have too little space, it could stunt their growth and lessen the harvest the gardener obtains.

7. Watering must be performed at the right moment for each type of plant in the greenhouse. Too little the plant will not live, too much and the roots could rot. The plant will die in some instances when overwatered.

8. Ideal humidity for a greenhouse is about 50% to 85%. At night, the humidity can go higher. If the humidity hits 90% to 100% for too long of a time, then diseases occur. Ventilation can release some of the excess moisture out of the greenhouse. This with air circulation will keep the level of humidity down to the ideal levels to prevent disease. Low humidity is not ideal for plant growth in most cases unless the gardener is growing plants that require those conditions. Foggers or misters help keep low humidity from happening.

9. Fertilize plants the correct number of times throughout the year. Each plant will have its own unique needs as far as this is concerned. Instructions typically come with plant seedlings or seeds, if not then ask a local nursery or research on the Internet for the required fertilization schedule.

10. Disease control is necessary in any garden even in the greenhouse environment. Often times, this is just a matter of controlling the humidity in the structure, but choosing disease resistant plants also helps.

11. It is imperative to keep a greenhouse clean, and free from mold and mildew. This promotes a healthy environment for the plants to thrive. There are commercial solutions for safely cleaning the inside of the structure.

12. Choose the best types of plants for the time of the year. Some plants do better in the higher heat of the summer than other ones do. On the other hand, there are those, which do better in the cooler winter months. For the utmost success in the greenhouse, be very selective with the plants in this manner.

13. Keeping the spent blooms and dead plant material away from live plants makes them thrive better. Place these items in the compost pile.

14. Pollination is a concern in a greenhouse. The gardener must do his own pollination since bees will not be inside of the structure. This is not a difficult task only a bit tedious.

15. Pest control has to be done inside the greenhouse. Even though it is an inside environment, insects can still get in with the gardener coming and going from the structure.

By following the above tips, the greenhouse gardener will reap the best harvest possible. The environment inside the greenhouse can be controlled to handle many different types of plants.

Rating for "Greenhouse Gardening Tips."

4.3 out of 5 stars from 10 ratings of Greenhouse Gardening Tips


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    • profile image

      Morgan Leafy 

      4 months ago

      Thanks for the tips. very useful.

      Any tips for me on reshaping and reviving a greenhouse vine. About 30 years old. Neglected and mishapen, but still delivered a lot of grapes until 2 years ago. Since then, it seems to ve affected by a mildew - the grapes dry and split.

    • profile image


      5 years ago

      Great tips, will use them in my gardening treatise.


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