When to Plant Onions in Colorado

First-time gardeners in the Centennial State often wonder when to plant onions in Colorado. If there’s one thing you need to know about Colorado’s cold mountain climate, it’s the fact that onions love it. However, to make sure that you get the harvest that you’ve been hoping for, it’s best to dig deeper and learn more about the right way to plant and grow your onions in Colorado.

When to Plant Onions in Colorado

When Should I Plant Onions in Colorado?

Expert gardeners recommend planting onion seeds as soon as you can work the soil. If your location is somewhere in Denver, the best time to plant them is in mid- to late March. However, it’s important to note that you can still plant some varieties of onions until late April.


How Do You Plant Onion Bulbs?

If you want to grow bulbs for green onions or scallions, all you have to do is to plant them at least 1 to 2 inches deep while making sure that they’re about one to two inches apart. Furthermore, onion bulbs should be planted in rows that are approximately 18 inches apart.

On the other hand, if you’re trying to grow bulbs for traditional onions, make sure that they’re planted about 1 to 2 inches deep and about 5 to 6 inches apart. These bulbs must be planted approximately 1 to 2 feet apart from each other in rows.


Do Onions Need a Lot of Sun?

Keep in mind that onions need full sun exposure in order to thrive. For this reason, it’s best to look for an ideal location where other plants won’t be shading your onions.


How Many Onions Would I Get from One Plant?

Under normal circumstances, only one onion is able to grow from a single bulb. However, this doesn’t mean that you won’t be able to produce lots of onions from one plant.


How Can I Plant Onion Plants?

You can start planting onions from seed or sets of small bulblets. After you start seeds, you transplant them into bigger cells. Before you plant them out, make sure that you put the pots outside for a few days

in order to harden them off.

When you plant them in your garden, make sure that you provide enough space for them to grow – at least 4 to 6 inches apart in a row. The rows must be about 1 to 2 feet apart. Each onion plant must be planted in a small hole that’s about t 1/2-inch deep.

Make sure that you trim their tops to 4 inches after you plant them. Keep in mind that your onion plants would need an inch of water every week. This means that if the weather is dry, you’ll have to water them more.


Should I Give Greenhouse Gardening a Try?

Yes, you should try your hand at greenhouse gardening. Aside from the fact that it allows you to extend your plants’ growing seasons and provide the best growing environment for them, but it also allows you to grow your own food. Let’s dive in and take a closer look at the benefits of setting up your own greenhouse.


It offers you an extended growing season.

A greenhouse traps the sun’s heat and radiation, as well as a reasonable amount of water vapor within the enclosure. For this reason, the warmth and humidity inside the structure stay relatively consistent, regardless of the weather outside. Needless to say, your plants’ growing seasons will extend through the coldest winters.


It provides an ideal growing environment.

Aside from the fact that the greenhouse provides enough warmth and moisture to enhance plant growth, it also protects them from heavy rains, high winds, blizzards, snow, and other harsh weather conditions. What’s more, it also minimizes your plants’ exposure to bugs and vermin that won’t hesitate to destroy all of your gardening efforts.

Moreover, since you have more control of your plants’ growing environment, having a greenhouse provides you with countless opportunities to plant off-season vegetables, fruits, and flowers. You can even grow plants that aren’t native to your area.


You can forget about landscaping.

Those who choose traditional outdoor gardening often find themselves quitting when they encounter landscaping problems. In case you’re wondering, landscaping is far from being easy if you decide to do it on your own. Although enlisting the help of landscaping professionals is the best way to go, it also comes with a price.

With greenhouse gardening, you won’t have to worry about landscaping because greenhouses come in various shapes and sizes. Plus, it’s extremely easy to customize the design of your greenhouse according to your personal preferences.


It allows you to save on grocery expenses.

You’re probably aware that the prices of farm-fresh produce tend to fluctuate due to weather conditions, as well as transportation costs. Having your own greenhouse will allow you to grow your own food and reduce your food bills.

You’ll have more control over your grocery expenses and more control over the types of fruits and vegetables that you want to enjoy all-year-round. Although investing in a greenhouse can be a little pricey, within a year or two, you’ll be able to recoup that cost and then some.


Final Thoughts on When to Plant Onions in Colorado Greenhouses

If you’re serious about taking your gardening experience to the next level, you’d want to figure out when to plant onions in Colorado greenhouses. Based on what we’ve talked about, now’s the best time to go right ahead and do it. Check out Krostrade’s website today to have a look at our wide selection of strong and durable greenhouses that are made of high-quality materials.

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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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