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How Much Ventilation Does a Greenhouse Need

If you’re new to greenhouse gardening and ventilating, you’re probably thinking, “How much ventilation does a greenhouse need?” The answer is that the plants in your greenhouse need all the ventilation they could get to grow properly. However, there are some days when your greenhouse will need extra ventilation, like during hot summer months.

Growing your crops in a greenhouse is extremely helpful. It allows you to extend the growing season so you can continue to grow your crops even during the cold winter season. However, you may need to add supplemental heat and light, depending on the type of plants you’re growing. Additionally, keep in mind that high heat and humidity are as damaging as a dry and cold environment.

With that said, proper ventilation is the key to maintaining normal temperatures and good air quality inside a greenhouse.

How to Properly Ventilate a Greenhouse During High Temperatures and Humidity

A well-ventilated greenhouse removes excess heat that could be damaging to your plants. Smaller greenhouses are more susceptible to extreme temperatures. If the temperature inside your greenhouse exceeds 90 degrees F, your plants will wilt. Good ventilation allows you to eliminate excess heat and keep greenhouse temperatures steady. For smaller greenhouses, you can place vents or use more sophisticated ventilating systems.

Humidity is good for starting seeds, but too much of it can also be harmful. Excess humidity is the perfect breeding ground for fungal infections and other diseases. High humidity plus high temperatures is a recipe for disaster. With a good ventilating system, you’ll be able to maintain normal humidity levels inside your greenhouse.

 

Two Types of Ventilation Systems

Before setting up your mini greenhouse, the first thing you need to decide whether you’re going to use mechanical or natural ventilating systems.

 

Natural ventilation systems

Natural ventilation systems rely on thermal buoyancy wind for air movement instead of powered fans. Most gardeners place roof and sidewall vents, so when the temperature rises inside the greenhouse, the hot air will escape through the vents. And as the hot air goes out, cooler air is drawn into the greenhouse through the other side of the vents. Wind plays a huge role in natural ventilation. As the hot wind goes out through the ridge vents, the sidewall vents bring fresh air into the greenhouse.

 

Mechanical ventilation systems

As the name suggests, this type of ventilation system uses fans or other mechanical systems to ventilate your greenhouse. If you’re looking for more control over your ventilation, a mechanical system is the one for you. However, many gardeners choose a combination of mechanical and natural ventilation. These systems are automated, so your environment inside your greenhouse stays consistent regardless of the outdoor weather. Additionally, choosing a mechanical system allows you to have a sealed greenhouse, preventing unwanted pests and critters from destroying your plants.

 

Reasons Why a Mini Greenhouse is a Great Option

There are many perks when it comes to greenhouse gardening. You can deal with inclement weather and pests, giving you more control over the growing conditions of your plants. If you’re still on the fence, here are some of the reasons why you should consider getting a mini greenhouse:

 

Keep your plants safe from pests

As mentioned, pests like aphids, cabbage worms, and beetles, along with small critters like rabbits, rodents, and squirrels would love to munch on your produce. Keeping your plants in an enclosed space keeps them safe from pests and diseases that can infect your plants.

 

Shield your plants from inclement weather

If you live in areas with unpredictable weather, you may benefit more from greenhouse growing. If you grow your plants inside, they’ll remain safe and protected from hail, high winds, blizzards, and heavy rain. Keep in mind that one bad storm can wipe out your entire garden.

 

Gardeners with limited space

Are you interested in growing your own crops but you don’t have enough space? A small greenhouse kit is a great alternative for people without much garden space. The standard size of small greenhouses is around 6ft., but if this is still too big for you, there are smaller options that could fit your balconies, patios, and even on your tabletops. Even though these greenhouses are small, they offer the same features as regular-sized greenhouses.

 

Ideal for beginners in greenhouse gardening

If you’re a beginner in greenhouse gardening and you want to learn more about it, using a mini greenhouse is a great way to start. Before you purchase or build a bigger one, you can learn how a greenhouse works and how plants grow inside.

 

Start planting early

With a mini greenhouse, you’ll be able to start plant growth even before the cold season begins in your area. After the weather warms and gets better, you can transfer these plants into your garden and harvest the product earlier than you intended.

 

The Bottom Line: How Much Ventilation Does a Greenhouse Need?

In case you’re wondering about what the bottom line is to “How much ventilation a greenhouse need?”, the simplest answer is that the ventilation inside your greenhouse depends on the plants you’re growing (their temperature preferences) and your outdoor weather conditions. Make sure to assess your plants and your climate before you start planting. If you live in areas with unpredictable weather, it’s best to add natural or mechanical ventilation.

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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.

 

Conclusion

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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