When to Plant Carrots in Colorado

If you’re thinking about when to plant carrots in Colorado, know that the Centennial State’s cool climate makes it easier for gardeners to crow this crunchy veggie. Although carrots grow well in Colorado, you still need to know a thing or two about how you can get the most of your harvest.

When to Plant Carrots in Colorado

When Can You Start Planting in Colorado?

There are two things you need to consider before starting a garden in Colorado: the climate and the type of vegetables to plant. To know the best time to start planting, you need to know your area’s plant hardiness zone.

Colorado has different microclimates and nine types of growing zones. This means that some plants may grow well in some areas and while some don’t. Despite the different zones, Colorado generally has a shorter growing season compared to other warmer and low altitude states.

Colorado is approximately 6,800 feet above sea level and every 1,000 feet higher, the temperature drops 3.5 degrees. Those living at lower elevations enjoy a warmer climate and longer growing seasons. This means that they’ll be able to plant a wide variety of vegetables.

With that said, it’s important to know your area’s Plant Hardiness Zone. Your garden will be more successful if you plant vegetables, herbs, etc. that grow well in your zone.


Take note of the frost dates

Most vegetables, including carrots, cannot thrive if there’s still frost in the soil. Gardeners and aspiring gardeners should know the first and last frost dates in their area. Simply put, take note of the date when frost stops showing up in spring, as well as the date when it reappears in the fall.

As mentioned, the dates vary depending on where you live. However, the last frost date in Colorado generally falls between May 15th and 30th. On the other hand, the first frost date is around September 15th, but in elevated areas, it can arrive early August.

If you have a spring garden, you can plant cold-season vegetables a few weeks or days before the last frost date. However, you should only plant warm-season crops once you’re sure that frost has passed.

There are several online sources for finding the frost dates in your area. It’s important to take note of those times and read the seed packets before planting your seeds.


What is the Best Month to Plant Carrots?

Carrots are classified as a cool-weather crop. This means that you can sow the seed when the soil temperature is at 50 degrees F, usually in the early spring. Keep in mind that this varies depending on where you live. For carrots, seed germination usually happens at 55 to 75 degrees F.

It’s best to use a soil thermometer to ensure that the soil’s temperature is accurate. Soil thermometers are inexpensive and you can purchase one from your local garden store. By using this tool every year, you’ll eventually know when to plant carrots in Colorado.


How Early Can You Plant Carrots?

If you’re planning to harvest carrots during summer, it’s best to sow the seeds from three to five weeks before the last frost date in the spring. You can plant new seeds every three weeks until late spring to ensure a plentiful harvest.

You can sow the seeds during mid to late summer or around 10 weeks before the first fall frost if you want to harvest carrots during fall. If you’re under Zone 3, it’s best to start seeds indoors in mid-June and harvest mid-September. If you’re under Zone 4, the best time to start seeds indoors is mid-April to harvest at the end of June; or start seeds by mid-July and harvest by the end of September.

If your area falls under Zone 5, you can start seed indoors during the first week of April and harvest on the last week of June; or start seed in the first week of August and harvest by mid-October. On the other hand, if you’re planting carrots in Zone 6, you may start seed indoors within the first week of April and harvest on the last week of June; or start seed indoors the first week of August and harvest by the last week of October. Lastly, if you’re in Zone 7, you may start seed indoors within the first few weeks of March and harvest mid-June; or start seed indoors on the first week of August and harvest last week of October.


Why Should You Grow Carrots in a Greenhouse?

Growing carrots in a greenhouse can extend your growing season; prevent pests and critters from eating your plants, and protect them from harsh weather.


Extend the growing season

Colorado weather and late frosts can shorten the growing season by weeks or even months. To extend the growing season, you can start planting seeds indoors and/or you can plant them in a greenhouse. You can create a microclimate inside your greenhouse, so regardless of the weather outside, your plants can continue to grow.


Prevent pests and critters

Critters and insects pose a threat to your carrots. They can munch on them and destroy your hard work. Deer, rabbits, woodchucks, and gophers are some of the four-legged animals that love to eat carrots. ON the other hand, insects like carrot rust flies and parsley worms can also damage your carrots.


Protect your plants from harsh weather

By keeping them inside a greenhouse, your plants are safe from heavy rains, excessive heat, and cold weather.


Final Thoughts

Now that you know when to plant carrots in Colorado, the next step is to look for a greenhouse. Even though greenhouses require a significant investment, the benefits of having one outweigh the price. Get in touch with Krostrade now to purchase high-quality, yet affordable greenhouses for any type of property.



Leave a Reply

Your email address will not be published. Required fields are marked *

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.


Leave a Reply

Your email address will not be published. Required fields are marked *

Sign up to our newsletter!