Updated at: 19-05-2022 - By: Sienna Lewis

Late April is the best time of year to plant Brussels sprouts in Colorado if you’re an amateur gardener. Their growing season may be longer than that of other vegetable kinds since it takes them a long time to mature. These vegetables may be grown very easily if you have the patience to wait.

Although Brussels sprouts are named after Belgium’s capital city, this type of vegetable was first consumed in Rome. The botanical name for this non-flowering annual Brassica oleracea is also noteworthy. Brussels sprouts can grow up to 30 inches long and 8 to 12 inches wide when fully grown.

In addition, it flourishes when planted in loamy soil with a pH of 6.5 to 6.8 and placed in a location that receives full light. Brussels sprouts may be grown almost anywhere in Colorado, because to the state’s wide range of hardiness zones, which vary from 3a to 7a.

Knowing How to Grow Brussels Sprouts in Colorado

Prior to planting the seeds outdoors, it is recommended that you start the seeds indoors for at least four to six weeks before doing so. Brussels sprouts have just enough time to flourish before the fall season begins if you opt to plant them in June. These cool-season crops require a small frost to help them grow faster because they take longer to develop.

How to Grow Brussel Sprouts - Complete Growing Guide - YouTube

Make sure that the soil is evenly hydrated so that your crop doesn’t go to waste.’ Mulching is a good option for accomplishing this.

Are Brussels Sprouts Easy to Grow?

The answer is yes, Brussels sprouts are quite easy to raise. Not only that, but the space they take up is little in your vegetable garden.

Before your area’s latest frost date, Brussels sprouts should be started inside for four weeks. Planting in spring and harvesting in fall are common practices for these long-season crops.

How Long Does It Take to Grow Brussels Sprouts?

Brussels sprouts have a reputation for being a patient vegetable. Typically, it takes between 26 and 31 weeks for them to produce a good crop of sprouts under typical circumstances.

Between 80 and 90 days after being transplanted and 100 to 110 days after seed is sown, the sprouts normally attain maturity.

What is the Best Month to Plant Brussels Sprouts?

Depending on your location in Colorado, the optimum time of year to plant Brussels sprouts varies. Zones 3 and 6 gardeners should begin their seedlings inside in April or May. Brussels sprouts, on the other hand, should be planted in April in Zones 4, 5, and 7.

Do Brussels Sprouts Come Back Every Year?

Because they’re commonly grown as annual crops, Brussels sprouts can be considered a biannual plant. They yield four-petaled yellow flowers after two seasons of cultivation.

What are the Benefits of Growing Plants in a Greenhouse?

In case you didn’t know, greenhouse-grown plants tend to develop better and faster than those grown outside. The expense of greenhouse gardening is a major consideration for many people before they take the leap.

Setting up their own greenhouse comes with numerous advantages that outweigh the costs. Learn about the advantages of greenhouse gardening by reading this:

You’ll get to grow your own food

You’ll be able to raise your own food, which is a major advantage of greenhouse gardening. Because fruits and vegetables can be pricey, this means more money saved on groceries.

You’ll be able to control the greenhouse eco-system

Plants raised in a greenhouse have an advantage over their outside counterparts in terms of growth rate and quality. As a result, greenhouse plants thrive because they live in a regulated environment where temperature, moisture, and humidity are all kept at their optimal levels.

Your plants won’t be exposed to inclement weather

Your greenhouse can shield your plants from the worst of Mother Nature’s fury, including heavy rain, snow, hail, and high winds.

You can keep harmful bugs and animals out

It is possible to keep seasonal pests and critters at bay using greenhouse gardening. In addition, the contained system of a greenhouse makes pest management considerably simpler to execute. However, you may also use insects like bees and ladybugs to assist boost the quality of your plants.

You’ll have more plant options

You can grow plants that aren’t native to your area in a greenhouse. Knowing what these exotic plants require in order to survive will allow you to make the required modifications to ensure that you get the best possible yields.

How To Grow Brussels Sprouts In Colorado - Krostrade

Learn How to Grow Brussels Sprouts in Colorado Greenhouses!

Try greenhouse gardening as soon as possible after you’ve discovered out how to grow Brussels sprouts in Colorado. Krostrade manufactures sturdy and long-lasting greenhouses that are created to order using premium materials. See for yourself what we have to offer.


  • Compost and well-aged manure are excellent organic matter to incorporate deep into the garden soil. The soil needs to be rich and fertile to give the plants the best start possible.


  • In late April, when the soil temperature has reached about 60 degrees Fahrenheit, most gardeners begin transplanting their young Brussels Sprouts plants into the garden. In the spring, you can direct sow seeds and then plan on a harvest in the late fall if you’re planting from seed.
  • Allow at least 24 inches between rows and an 18-inch separation between individual plants. To care and harvest these plants, you’ll need to give yourself plenty of freedom to move down the rows.


  • To get a productive crop of Brussels sprouts, you need to water and fertilize regularly at soil level. With a soaker hose, you can water your plants while keeping their leaves dry. No sprouts will grow if water and nutrients are not provided on a regular basis.
  • Plants should be sidedressed 30-40 days after being transplanted in order to ensure a long-term harvest. Use a balanced fertilizer like 5-10-10; too much can promote excessive growth with a lack of sprouts if it’s applied too heavily. You can sidedress your Brussels sprouts by scattering dry fertilizer 6-8 inches out from the plants on both sides of each row. Apply the fertilizer and then water.
  • Cabbage moths may be an issue because this crop belongs to the cabbage family. The moths will not cause any harm if you use row cover cloth. Adding marigolds to the area may also be beneficial.


  • Keep a record of the number of days it will take your plant to mature. A general guideline is that the sprouts should be harvested after 90-100 days. However, the plant will give you cues when it is ready to harvest. Watch for the bottom leaves to transition from green to a lighter golden green. The lowest sprouts should be firm and about an inch in diameter at this point.
  • Sprouts will become tougher if you wait until the leaves turn yellow, a sign that you left harvesting too long ago.
  • Begin by removing the lowest leaves and sprouts of the plant when the color is appropriate and the sprouts are ready to be removed. They may not all be ready at the same moment Continue picking when the leaves turn a darker shade and the sprouts appear. At the very top, the plant will continue to develop new leaves and bud development during the next few weeks.
  • To speed up the harvest, you can remove the buds at the top of the plant, which will stop the plant from generating any more buds.
  • Refrigerate Brussels sprouts in an airtight container. Make sure to prepare the sprouts as soon as possible after harvesting because the longer they are stored, the tougher and less flavorful they will become.

Ask a Master Gardener: Growing Brussels sprouts for fall harvest | Home And  Garden | nrtoday.com

Companion Plants

Plant these partners with Brussels Sprouts:

  • Beets
  • Carrots
  • Chamomile
  • Dill
  • Mints
  • Onions
  • Rosemary
  • Sage
  • Thyme

Strawberry plants should not be planted near.

Materials for Success

  • Ground thermometer.
  • quality manure and compost
  • Fertilizer that is dry and well-balanced (5-10-10)
  • A hose for watering plants
  • Cloth for row covers
  • Marigolds

Contact Nick’s Garden Center to learn more about brussels sprouts and how to grow your own edible vegetable garden.