How To Grow Tomatoes In A Mini Greenhouse

Know how to grow tomatoes in a mini greenhouse by planting and maintenance, and you’ll get your fresh supply of this delicious and healthy fruit-vegetable each year. Regardless of your available space, the mini greenhouse will ensure that your crops will thrive well. Venturing in tomato cultivation will also be easier for newbie gardeners using a mini greenhouse.

Another great thing about tomatoes in the greenhouse is that you can sow in fall and spring for a two-crop rotation each year. With proper planning of when to grow plants and care for them in the mini greenhouse, you can reap many benefits with minimal effort. However, tomatoes are not for the lazy farmers, so read down below the tips for a productive mini greenhouse. 

How To Grow Tomatoes In A Mini Greenhouse

How To Grow Tomatoes In A Mini Greenhouse For Success


What tomato varieties to get for a mini greenhouse?

Before you start planting, it’s essential to educate yourself about the tomato varieties suitable for a mini greenhouse. This will guarantee success because the conditions in the greenhouse will support their growth and productivity. But since tomatoes thrive well in the sun, the excellent heat inside the greenhouse already puts you at an advantage. 

According to the University of Massachusetts Amherst, greenhouse farmers should never use field tomato varieties because they will fail to yield well due to their adaptability. You would want to use Dutch hybrid indeterminate varieties because they are explicitly bred for greenhouse production. Greenhouse producers recommend Ailsa Craig, Black opal, Capprica, Ferline, and Sungold for the mini greenhouse. 


How to plant tomatoes in a mini greenhouse?


Two-crop vs one-crop

When planting tomatoes in the mini greenhouse, select if you want to do two crops per year or one crop per year. States like Mississippi can have a two-crop system wherein you can plant in spring and fall. With a one-crop system, this is usually in spring because most areas experience hot summers. 


Soil culture vs hydroponics and vines vs bushes

Another thing to decide is if you want to grow tomatoes in the mini greenhouse using soil culture or hydroponics. The former uses a plot of soil, while in the latter, you’ll develop the roots in an artificial soil mix. Once you’ve chosen your production system, it’s best to grow tomatoes as vines for the mini greenhouse because growing bushes require more extensive space. 

Once you’ve decided on your cropping and production system, you can plant the seeds on a seed tray. Choose an area in the greenhouse that is not hit by direct sunlight, but is still warm. Keep the compost moist but never overwater it to prevent diseases. 

Once seedlings emerge, move the tray in a bright area and wait for 60 days before potting them. It is an excellent way to know if you can plant the tomatoes outside or if they’re ready for potting in the greenhouse if they are at least 6 to 8 inches tall. Lastly, to ensure that your plants thrive well in the mini greenhouse, maintain ideal temperatures at 70 to 80°F in the day and 60 to 65°F at night. 


How to care for tomatoes in a mini greenhouse?



Tomatoes need a lot of water, but overwatering can cause problems as well. Another common mistake of gardeners is that they don’t water the roots, but instead, water from above can cause diseases and pests. The frequency of watering, in general, depends if the soil is dry. 



The best way to know the fertilizer for your tomatoes is to test the soil. After you know the nutrients needed, you can fertilize when the fruit is close to its final size, and after picking. Afterward, feed to prevent burning.


Ventilation and humidity

Besides the temperature, it’s vital to maintain the mini greenhouse’s humidity between 60 and 70 percent. This way, you can reduce the risks of diseases and also improve the pollination. Always check the ventilation and adjust according to the external temperature.


Weeds and pests

Mulching and fumigation can control weed in the mini greenhouse. Remember that there are no herbicides meant for greenhouse use. For pests in the mini greenhouse, proper sanitation and surveillance can prevent bugs. 


What are the companion plants for tomatoes in a mini greenhouse?

You can make the most of your mini greenhouse by planting tomatoes with companion plants. Companion planting is an excellent and reliable way to save space and have plants that benefit from each other. With proper planning, you can plant other crops with tomatoes and prevent pests from occurring. 

For example, herbs like fennel and dill deter pests but also attract beneficial insects like ladybugs. Other plants like mint even help improve the health and flavor of tomatoes. If you want an aesthetically pleasing mini greenhouse, marigolds also make great neighbors with tomatoes.



If you want a fresh supply of healthy and delicious tomatoes, consider cultivating them in a mini greenhouse. It’s not overwhelming to learn how to grow tomatoes in a mini greenhouse because it can be divided into planting and maintenance. Many university extensions also offer manuals to guide gardeners in tomato production. 

Why a mini greenhouse? Because of its size, you can easily maintain and monitor the internal conditions to support the growth of crops. Additionally, it’s best for those starting and don’t want to get overwhelmed with tomato farming. 


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How To Prevent Root Rot In Hydroponics: 3 Useful Tips

If you’re a newbie gardener who’s looking to find ways to hone your skills, you’d want to learn how to prevent root rot in hydroponics even before this problem affects your plants.

Hydroponics can be advantageous to crops in more ways than one. However, it also comes with risks of diseases, such as root rot, which can be destructive or even lethal to your plants.

Unfortunately, there are no effective methods to recover the wilted parts that were affected by the root rot once it hits your plants. The only thing you can do if you do not want this catastrophe to befall your crops is to prevent it before it happens. Read on to learn more about this subject.


What is Root Rot?

Root rot is a disease that attacks the plant roots and causes them to suffer decay. This usually happens when a lack of oxygen supply occurs in the substrate.

To give you an idea, think about plant roots that are submerged in water that only has a little oxygen in it. Over time, the plant suffocates and dies.

Aside from rot and decay, this disease also leads to the proliferation of fungi that are naturally present in the soil. These include Rhizoctonia, Alternaria, Pythium, Botrytis, Fusarium, or Phytophthora. As soon as fungi colonies start to grow, they tend to target the weakened roots and infect your precious plant babies.

Once the plant becomes infected, they won’t be able to take in what they need to grow – water, oxygen, and other nutrients. When this happens, it won’t be long before the plant dies.


What is Hydroponics?

In case you’re not aware, the term hydroponic is derived from a Latin word that means “working water”. To put it simply, hydroponics is an art that involves growing various types of plants without soil. If you’re like most people, the first thing that comes to mind when somebody talks about hydroponics would be a picture of plants with roots suspended into the water without using any type of growing medium.


Avoiding Root Rot in Hydroponic Systems

Detecting and identifying root rot can be tricky. When your plants get infected, their leaves and roots gradually wither until the whole crop itself dies from the lack of nutrients, which is a common symptom of many diseases.


What causes root rot in hydroponics?

One of the requirements in hydroponics systems is oxygen. Without it, your plants are basically on the road to death. On the other hand, lack of such is one of the major triggers for root rot, and it must be avoided at all costs.

Just like when planting in soil, you loosen up the ground so that your plants’ roots can have their required intake of oxygen. That is the case for crops grown in aqueous solutions as well. If they cannot breathe, they would not be able to grow.

Another agent for root rot is the temperature. The last thing you would want in your system are parasites that leech nutrients intended for your plants and infect the water during the process. In common terms, these fungi are called molds.

One of the best breeding grounds for these is warm and moist areas. For this reason, if the water temperature inside your reservoir is high, then you are susceptible to it. Something as minor as letting the solutions exposed to sunlight can already be a risk factor.


3 Useful Tips on How to prevent root rot in hydroponics

There is good news! Root rot in hydroponics can be prevented! Just follow these tips:

Tip#1: Use the right air pump

If you do not want root rot to affect your plants, you merely have to avoid its causes. If you need oxygen, keep the water bubbling by providing an air pump of appropriate size, and also give importance to proper ventilation in the room.


Tip #2: Maintain the temperature

The temperature should be maintained within the 70 to 80 degrees F range. Get rid of any materials that can make your system vulnerable to infections, and make sure not to disturb your crops while they are trying to grow.


Tip #3: Get rid of the rotten parts

However, if you failed in preventing the disease, then the rotten parts should be removed immediately. Cut them off as there is no chance of reviving them, and focus on the potential new growth instead. Fix your hydroponics system and eliminate the risks.


Why Give Greenhouse Gardening a Try?

Greenhouse gardening offers numerous benefits to greens aficionados who dare to take their gardening experience to the next level. Aside from acting as a shield against the effects of inclement weather, a mini, hobby, or semi-pro greenhouse can also serve as a protective layer that keeps harmful bugs and critters at bay.

What’s more, its enclosed structure allows you to control your plants’ growing conditions including the temperature, light, moisture, and ventilation of the greenhouse’s internal environment. With a controlled environment, you’ll be able to extend growing seasons and grow plants that aren’t native to your area.



No matter how well-informed you are about how to prevent root rot in hydroponics, you cannot completely eradicate the risks. Therefore, to avoid the worst-case scenario, you should be prepared to sacrifice the infected for the sake of others. While you’re at it, consider trying your hand at greenhouse gardening as well.


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