Updated at: 31-05-2022 - By: Sienna Lewis

This article is a good starting point if you want to learn how to produce tomatoes in Colorado. Colorado’s unpredictable weather can make growing tomatoes a struggle. Gardening in the Centennial State, on the other hand, may be a pleasant experience if you plan beforehand.

When Should You Plant Tomatoes in Colorado?

Planting tomatoes after the risk of frost is ideal. Low to mid-40s at night and at least above 50 during the day should be expected during this week. Tomato plants’ growth and productivity might be hampered by daytime temperatures that are too cool.

6 Secrets on How to Grow Tomatoes in Colorado - Krostrade

Greenhouses are used by many Colorado gardeners in order to lengthen the growing season. Protecting the plants from cold winds and temperature drops is another purpose for it.

Which Tomatoes Grow Best in Colorado?

Despite the difficulties of growing tomatoes in Colorado, there are several types that flourish in the region. Colorado is a great place to grow hybrid and heirloom tomatoes, respectively.

The flavor and disease resistance of hybrid tomatoes are unparalleled. However, heritage tomatoes are more susceptible to some plant diseases than other varieties.

Try varieties like Stupice, Early Girl, and Fourth of July for early-season planting. For mid-season planting, Ace and Champion are two excellent options. Super Sweet 100s and Sun Gold cherry tomatoes are excellent choices if you’re a fan of the fruit.

What are the Tips on How to Grow Tomatoes in Colorado?

To grow and bear fruit, tomatoes require nutrient-rich soil, ample water, fertilizer, and sunlight. Even if you’ve been growing tomatoes for years, there are a few things to keep in mind.

Sunny Location

Tomato plants need at least six hours of direct sunlight each day to thrive. Plant them in a warm, well-drained soil.


Tomatoes should be planted after the last frost, as previously stated.

Plant Deep in the Soil

Plant your tomatoes deep in the ground. Soil should be tilled to a depth of 8-12 inches in order to allow room for root development. Compost or manure can be added to thick soil to help it loosen up. Your plants’ texture and drainage will both improve as a result of this practice.

Water Regularly

Water your plants on a regular basis. The fruits will crack if you overwater in an attempt to make up for a week that you missed.

Plant Maintenance

Remove weeds and lower leaves to maintain your plant healthy. Removing the yellowed leaves closest to the ground is an effective way to keep pests at bay. It will also help to circulate the air in the room.

What is Colorado’s Growing Zone?

While the USDA zones for the state of Colorado range from Zone 3a to Zone 7a, the state’s temperatures can still fluctuate. Even if you live in zone 6a, for example, the temperature may fall below the average temperature mentioned.

If you’re going to start growing 6a plants, make sure you safeguard them. If you don’t, your plants may suffer from winter dieback.

Winter hardiness is an important consideration for Colorado gardeners. This is critical to the long-term health of the plant. Additional considerations for growers include severe winds, scorching temperatures, weak soils and freezing winters.

Top Secrets on How to Grow Outstanding Tomatoes

Check seed packs and nursery catalogs for information on how to grow tomatoes and other crops in Colorado. Your plants will thrive in your area if you do this. Healthy veggies may be grown under the right conditions, including adequate sunlight, a healthy soil, frequent watering, and the use of companion plants.

What Type of Vegetables Grow Well in Colorado?

If you know your zone, you’ll be able to identify the plants that thrive best in your region. While producing veggies in Colorado is not without its challenges, there are a number of fruits and vegetables that thrive in the area.

If you’re going to start growing your own food, you should do so inside. Because of this, even in the colder climate of Colorado, you can get a jump start on the harvest and extend the growing season. Beets, cabbage, kale and broccoli are some of the veggies that may be grown in milder seasons. Carrots and leeks can also be grown during the fall and winter months.

Beans, corn, eggplant, peppers, tomatoes, squash, melons, and cucumbers are all examples of warm-season vegetables.

Why Should You Consider Growing Tomatoes in Greenhouses?

Because gardening in Colorado may be difficult, especially in the spring when temperatures fluctuate widely, it is well worth the expense to grow tomatoes in greenhouses. As a result, greenhouse gardening is the only option for serious home gardeners. By doing this, your plants are shielded from the elements and pests and illnesses are kept at bay.

Tomatoes can be grown year-round in a greenhouse if the soil and environment are properly managed. Additionally, a greenhouse extends the growth season of your plants, allowing you to cultivate more veggies, and protects your crops from seasonal pests and diseases.

The Bottom Line

Although greenhouses require a large financial outlay, the advantages of having your own greenhouse far outweigh the drawbacks. There are several advantages to growing your crops in a greenhouse, such as increased yields, extended growing seasons, and healthier plants.

Investing in a greenhouse is the next step after you’ve mastered the art of cultivating tomatoes in Colorado. Check out Krostrade if you’re seeking for greenhouses in Colorado that are both high-quality and inexpensive. High-quality materials are used to build our greenhouses, which are able to survive extreme weather.

Want to grow great tomatoes and peppers on Colorado’s Front Range!  Let us show you how…

Tomatoes have no competition when it comes to popularity in vegetable growing. In comparison to the ripe, luscious fruits we may harvest from our own plants and what passes for tomatoes in the produce section of a supermarket, there is no comparison.

Tomatoes might be difficult to grow over Colorado’s Front Range, but with a little extra T.L.C., you can maximize your tomato crop.

Starting with some tomato-growing advice, we’ll look at another popular home-grown crop: peppers, especially the smoky ones!

So many choices!

With more than a hundred varieties of tomatoes, Tagawa Gardens kicks off the season. It’s a little disorienting. The following is an overview of the various choices you’ll have.

If you’re growing “determinate” tomatoes, you can expect to harvest them in a few of weeks. If you’re looking for a long-lasting harvest, but don’t mind eating a lot of tomatoes at once, this variety is for you.

Once they get going, “indeterminate” types will keep producing until the plants die off due to cold weather later in the season. Staking or using anything like a tomato cage to provide support is frequently necessary for indeterminates.

Two plants with desirable characteristics like flavor or vigor can be crossed to produce “hybrid” tomatoes. In addition, they are more likely to be resistant to disease. The presence of initials like VFTN on a plant’s label indicates that a particular strain has been cultivated for disease resistance.

Tomatoes referred described as “heirlooms” are those grown by our ancestors. In spite of their sumptuous size, they are more susceptible to common tomato diseases.

The number of “days to harvest” indicates how long it will take your tomato plant to bear fruit once you plant it. Those should be “growth days,” after all. Days that are cool and overcast may not count or hinder productivity.

Early-season cultivars require between 55 and 70 days to mature. Two popular early-season tomato varieties are “Bush Early Girl” and “Fourth of July”.

Among the various kinds available in the middle of the season are “Champion,” “Celebrity,” “Big Girl,” and “Brandywine.” Their growth cycle will take 70 to 80 days.

There are late-season cultivars that can be harvested in as little as 90 days. There are usually beefsteak tomatoes here.

Pots or Garden?

Consider if you’ll grow your tomatoes in pots or directly in your garden while making your selection. Look at the tomato information tag for mature height and terms like “Bush” or “Patio” in description—smaller height is best for tomatoes in containers. Taller sizes work well in the ground. In pots, we recommend Aurora Innovations’ “Greenfields” Roots Organics since it’s high in organic matter. When planting in raised beds, use RichlawnRaised ®’s Bed Mix or composted organic amendments in your existing soil.

Bring on the warm weather and sunshine

In order for tomato plants to thrive and produce fruit, they necessitate the presence of warm temperatures. Plants can be stressed and their flowers damaged by temperatures as low as 50° and as high as 90°.

Protect young plants from frost with Walls o’ Water early in the season. With that said, they’ll appreciate anything that can provide some shade during the hottest portion of the day, especially when the plants are still young.

Not too wet and not too dry

Whether you’re growing tomatoes in a bed or a pot, you need to maintain a constant moisture level. Known as “B.E.T.” (Blossom end rot), this is one of the most common tomato concerns. At the base of the fruit, there is a dry, leather-like area. Peppers and eggplant can also be affected.

Plants that have been overwatered or underwatered might develop B.E.T., which is an indication of uneven watering. Once the top few inches of soil have dried up, be sure to water your tomato plants thoroughly. Using a watering wand or soaker hose at the base of the plant is the best way to ensure that the leaves remain dry.

Mulch is a tomato plant’s friend

The pathogenic bacteria or fungus that cause many tomato illnesses are found in the soil. Water from the soil can spread these illnesses if it lands on lower leaves of the plant.

In many ways, mulching around the plant’s base is beneficial. Under the plants, I place a few inches of straw layered so that it extends from the stems to the leaf tips. Plants are less likely to be infected by splashing disease germs onto the mulch. Tomatoes that are two to three feet tall and have a good amount of foliage should have their lower leaves trimmed off to protect them from pests.

To prevent blossom end rot, mulch helps to keep the soil equally moist between waterings. In addition, weeds are kept at bay by this method. Nicely done!

Fertilizer… a little bit can go a long way

So-called “heavy feeders” refer to plants like tomatoes. They are big fans of healthy food. Overfeeding your plants is no different than overdosing on vitamin and mineral supplements your body won’t utilize.

When it comes to Colorado tomato harvests, Tagawa Gardens has a vast selection of fertilizers to choose from. A spoonful of fish emulsion in a gallon of water applied to the foliage once a week is my preferred method of weed control. Liquid kelp sprayed monthly at the same rate seemed to be appreciated by the plants as well. Around the middle of August, I cease fertilizing completely to allow the plants to focus their energy on ripening the fruit instead of growing more foliage.

It would be our pleasure to answer any queries you may have about additional fertilizer options at Tagawa’s.

How to Plant and Grow Tomatoes | Better Homes & Gardens

Pests and other problems

Tagawa Gardens has a selection of alternatives to assist you fight back against a variety of pests and illnesses that threaten tomato plants.

Bringing an afflicted plant or suspected insect culprit to our plant experts at Dick’s Corner for diagnosis and assistance is something we strongly encourage you to do. Taking images with your phone (particularly close-ups!) is often helpful.

Tomatoes, peppers, and eggplant are all members of the same family, therefore all of these growing tips apply to them as well.

And speaking of peppers…..

A growing number of customers at Tagawa’s are asking about the availability of hot, home-grown peppers, especially those that can be described as “extremely hot” in the spice department. Every year, we have more and more pepper kinds to choose from!

It’s still possible to find milder peppers that won’t register on the heat scale. Although it looks and tastes like a jalapeno, the “Fooled You” pepper has no heat. Most of the time, “Shishito” peppers are referred to be “sweet.” Roasting, frying in a skillet, and grilling are all excellent methods of preparing these foods, in particular.

“Ghost” peppers, on the other extreme of the spectrum, are reserved for those who are willing to take a chance.. Sweet peppers have no “Scoville units,” which is a measure of the pepper’s spiciness, in this context. The Scoville heat index of a jalapeno can range from 5,000 to 7,000. a million ghost peppers (Be careful around children and animals!)