Updated at: 22-04-2022 - By: Sienna Lewis

It doesn’t matter how tiny a greenhouse is, gardeners must learn how to properly maintain it through frequent inspections, cleaning, and sanitization. These two easy-to-follow suggestions can help you have a useful greenhouse and a flourishing garden. You’ll notice a difference in the health of your plants if you take care of your little greenhouse.

You may have already learned about the responsibilities of running a small greenhouse when you began. However, as time goes on, the greenhouse’s longevity and the year-round output of the plants will be determined by the amount of upkeep it receives. It’s excellent news that a micro greenhouse’s compact size makes upkeep easier and more convenient.

As a result, you have no reason to avoid fulfilling these obligations.

How To Maintain A Mini Greenhouse: Tips For New Gardeners

New gardeners often assume that maintaining a tiny greenhouse will be time consuming and expensive. If you’re a fan of gardening, you’ll find the following chores easier or more challenging. In the beginning, you may feel overwhelmed by all of the possibilities, but with practice, you will discover a method that works best for you.

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When it comes to the costs, a greenhouse is like a live and regulated environment. As a result, even if the project is small, you should expect to incur certain costs over time. However, it is possible to implement more cost-effective and environmentally friendly management approaches.

Regular check-up of conditions


Temperature is one of the most critical interior conditions. Neglecting to check and manage the temperature has an effect on the micro greenhouse’s materials as well as the plants. The use of a monitoring system, which lets you know when the temperature inside needs to be adjusted, can save you money and time in the long run.

The plants you will have in the greenhouse should be planned at the same time as everything else. Make sure they are in the best possible conditions. Always keep in mind your state’s hardiness zone as a reference for outdoor temperatures.


Did you know that the temperature in the micro greenhouse may be affected by lighting? When selecting a little greenhouse, it’s important to keep in mind that some plants are very sensitive to light. Additionally, you’ll have a hand in their upkeep, as some crops thrive in a narrow range and necessitate adjustments as they mature.


The tiny greenhouse’s ventilation is the next item on your checklist after checking the temperature and lighting. Ensure that the vents and doors open and close properly, and then adjust to the weather outside. It could be necessary to install an airflow fan in the little greenhouse to maintain proper circulation.

Watering system

The watering system of a little greenhouse is an easy mistake for a gardener to make. If you don’t want your plants to suffer from water damage, be sure not to overwater them or allow drips to form. Check to see if the water is going to the soil and not the plants’ leaves.

Cleaning and sanitation

Cleaning and disinfection

Cleaning and disinfection immediately spring to mind when we think of greenhouse upkeep. In order to avoid issues in the future, it’s critical that you perform this task on a regular basis. As an example, weed problems in the little greenhouse might lead to pests and diseases if not addressed early on.

In addition, the greenhouse must be kept clean and orderly at all times. Because it’s a smaller greenhouse, you’ll be able to see any messy spots or trash more easily. Plant debris, dirt spills, and hastily organized tools are just a few examples.

Everything, including pots, should be well cleaned to prevent the spread of illness and pests. If possible, use an oxygen bleach solution to sterilize them. Using diatomaceous earth to clean up a strewn-about area before shutting down the greenhouse is an option.

Pest control

In addition to being proactive, regular sanitation and inspection of the greenhouse structure can be helpful in pest management. ‘ Gnats can be attracted to irrigation and storage tanks by algae.

Oxygen bleach can be used to sanitize reservoirs and lines. It’s possible to find spider mites and aphids and thrips and whiteflies in the wooden portions of the greenhouse. With an oxygen bleach solution and vegetable-based horticultural oil on the wood, you can disinfect your little greenhouse and reach cracks where pests can hide.

Finally, keep in mind that your personal belongings, such as your clothing and shoes, can harbor bugs and viruses.

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Why Clean Your Greenhouse?

Cleaning and maintaining greenhouses, whether constructed of glass, polycarbonate, or polyethylene plastic, is essential. To keep unwanted pests and diseases out of your home, you need to clean it on a regular basis or at least once a year. While plants thrive in this protected habitat, pests can thrive or overwinter as well. It’s likely that insects and mites will burrow into the ground, plants will be infected by pests, algae will grow on roadway lines, and gnats will breed on organic leftovers..

A combination of crop removal, disinfection, preparation, and sanitization is necessary to ensure the health of any plants you intend to grow in spring. While year-round greenhouses should be cleaned up on a regular basis, seasonal greenhouses only need to be cleaned up once a year at the end of the growing season.

Stop Overwintering Pests and Diseases

In a greenhouse, pests and diseases have a better chance of surviving the winter. Fortunately, if you pay attention to the types of crops you’re cultivating, you can typically guess what they’ll be.

The following is a list of the most frequent pests and diseases found in greenhouses. The need for a greenhouse clean-up is much greater if you have previously experienced any of the following:

Cleaning Your Greenhouse Step-by-Step


During a period of good weather, remove all plant materials from the greenhouse, including any weeds seeking to establish themselves on the clay floors.

Look for illness or pests in the compost and place it far from plants that could be infected.

Scale, mealy bug, whitefly, or spider mite colonies can be found on citrus and tropical plants. Quarantine the problem until it is completely resolved with safe management practices. Spider Mites: How to Identify and Control Them Naturally can provide additional details.

Pots and Accessories

A solution of 3/4 cup oxygen bleach to one gallon of water should be used to clean all greenhouse accessories, including as pots, trays, and equipment.

Dispose of or recycle seed trays and pots as quickly as possible, putting them away from the greenhouse.


Infected soils can contain pythium, fusarium rhizoctonia, grubs, and other pests, as well as diseases. Allow compost to rest for at least a year after removing soil from pots and beds.

In the spring, or shortly before planting a fresh crop, acquire clean, disease-free soil from a reliable provider. In addition to the soil in your pots and beds, this also includes the dirt between the walks and under the benches.

When you’ve finished cleaning up and your greenhouse is resting, use diatomaceous earth to treat the entire exposed area.


Disinfect irrigation systems and waste storage facilities. Algae can grow in irrigation pipes and holding tanks, and the gnats they attract are a danger to the roots of plants. Flushing lines, soaking dripper heads, and cleaning holding tanks and fertilizer reservoirs with a solution of 3/4 cup oxygen bleach to one gallon hot water works well.

Structure and Wood

Overwintering bugs have a perfect place to hide in the greenhouse. Metal-framed greenhouses are less prone to contamination, although a disinfectant is still required. Spider mites, thrips, aphids, and whiteflies all choose wood as a hideout because it has the appropriate cracks and crevices for them.

Oxygen bleach can be used to clean your greenhouse’s structure and glass.

All exposed wood should be oiled with a horticultural oil made from vegetable oils. The oil should be applied with a brush to ensure that it gets into all of the cracks and crevices to smother pests that are hiding there.

Over the winter or as long as possible, leave the greenhouse alone. Only pest and disease-free plants should be introduced, and only clean soil should be utilized to replace prior soils.

Ongoing Greenhouse Cleaning and Maintenance

Intercropping or overlapping planting should be avoided during the growing season to limit the risk of disease spreading from one crop to the next.

As fast as possible, remove “green bridges” or weeds and volunteer plants that might serve as hosts for problems between crops.

Remove diseased or pest-infested plants as soon as possible from the growing area. This will help to contain the outbreak while also making cleanup easier.

Avoid recontamination at all costs.. Shoes, clothing, and even new plants can spread disease and pests from one location to another.

Don’t go into the greenhouse if you’ve recently been in a place where you may have been exposed to a danger.

Reusable pots should be cleaned and disinfected on a regular basis. Your chances of failure decrease as you increase your effort.

A Clean Slate

You’ll save time and energy in the spring by doing greenhouse cleaning and maintenance towards the end of the season. A better chance of surviving and flourishing will be afforded to any plants that are planted in the greenhouse the following year.

The benefit of having a greenhouse

In order to extend the growing season, greenhouses are commonly used. You may easily grow veggies in the spring and fall in this area because to its plenty of sunlight and warmth. Your plants will be able to grow while avoiding rain, snow, and wind thanks to the amount of energy they receive from the sun. When your seedlings are grown enough or the weather is warm enough, you can transplant them into your garden.

Reasons to maintain your greenhouse

Even though your greenhouse is filled with lovely plants, it still requires attention and care just like any other room.


As a gardener, you’ll likely spend a lot of time in a greenhouse, even if it is only for the purpose of keeping your plants warm. Maintaining this area will not only improve its aesthetic appeal, but it will also make it more useful. Navigating this area should be a breeze. With the proper planning and organization, growing plants in a greenhouse may be a lot more efficient.

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Pest control

Aphid-killing ladybugs and pollinating bees are two examples of garden-friendly insects. In a greenhouse, however, not all animals will be able to thrive. Keep a watch on your soil and foliage in a hot and humid greenhouse to prevent pests and illnesses from wreaking havoc.

Temperature regulation

Your plants will be happier if you keep the temperature in your greenhouse at a comfortable level. Winter and summer temperatures that swing drastically from one extreme to the other can be taxing on your plants. It’s important to protect your plants from overheating in hot weather by providing them with plenty of shade and ventilation.

Optimal photosynthesis

Light and heat are trapped in greenhouses. Plants use sunlight as a source of energy to develop, and they also require warmth in order to sustain themselves. In order to maximize photosynthesis in a greenhouse, it is necessary to keep the windows and walls clean. Many greenhouses feature thermal mass, which refers to the amount of heat that may be stored. Gardeners will place water jugs or bricks in this area to collect surplus heat during the day and release it at night when the weather is colder.

Your greenhouse maintenance checklist

Have no idea where to begin? With our comprehensive maintenance checklist, we’ve got you covered.

Tidy up your greenhouse

Pull the weeds and clean the rubbish from your greenhouse. The opposite of placing an aloe vera plant next to a thirsty begonia is to put them together in a pot. Make an assessment of your available area to see whether more shelves or organizers for your plants and tools are required.

Check your soil and leaves for pests and diseases

Keep an eye out for bugs on the undersides of your leaves. Also, keep an eye out for any unusual growths or odors in your soil. In order to save time and money on pest management, it is preferable to start with healthy plants from your local garden center. Compost and fertilizer can be used to keep plants happy and healthy.

Insects like fungus gnats may thrive in a greenhouse full of dead leaves and dirt. If your plants are infested with pests like spider mites and scale, use water, alcohol, or neem oil to get rid of them. To prevent them from spreading to other plants, remove the pests as soon as possible.

Gauge if your greenhouse needs extra ventilation or heat protection

You need to keep your vegetables and plants well-ventilated in the summer. There are a plethora of options available to you in this regard. You can begin by putting in fans in your greenhouse to help keep the temperature down. Add shade cloths to the roof or windows if your plants begin to look burned. If you’re planning on building a greenhouse, you might want to think about include operable windows and doors in your design.

A factor to consider in colder weather is heat retention. Use frost blankets and cardboard covers if you don’t want to completely close your greenhouse for the winter. Glass panels can be thrown over seedlings to keep them warm, and heat mats can be used as a supplement. Heat can be stored in barrels, hay bales, or even gravel by utilizing thermal mass. Heat is stored in thermal mass, which is used to store and release heat at different times of the day. Adding a tiny heater is an option for some gardeners.

Clean your greenhouse roof and walls

You’ll want to clean your greenhouse’s walls and windows to ensure that it gets enough sunshine. Water and mild soap should be enough to clean a greenhouse, which is composed of clear plastic or glass. Dirt, algae, and other debris can impede your plants’ ability to absorb sunlight and turn it into energy.

Taking care of your greenhouse can seem like a huge undertaking sometimes. However, if you make a checklist of everything you need to do, you’ll be well on your way to giving your plants a welcoming home.


A little yet useful addition to your garden, the mini greenhouse is the perfect size for a small yard. However, gardeners must know how to properly maintain a little greenhouse if they want it to serve its function. These obligations and tasks can be onerous for newbies, but the payoff will be tenfold in the long run.

Checking on conditions and cleaning and sanitizing are two of the key responsibilities of maintaining a tiny greenhouse. If you do both of these things correctly and regularly, you can avoid more serious issues in the future. On top of that, you can easily include these activities into your everyday routine in the little greenhouse.