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Here is the BEST Time to Start Kohlrabi Seeds in Colorado (2022)

Do you want to grow kohlrabi seeds in Colorado, but don’t know when to start them?

Starting kohlrabi seeds is not as easy as it seems.

Here’s why:

  • Kohlrabi Seeds must be consistenly watered, receive at least 8 hours of sunlight a day, & be kept at room temperature of at least 70 degrees Fahrenheit.

So if you don’t consistently water them they won’t germinate. If they aren’t in a room that is at least 70 degrees Fahrenheit they won’t sprout. And if it receives 8 hours of sunlight the plant itself won’t grow.

  • Because Colorado’s growing season is not long enough, kohlrabi seeds cannot be sowed outside and should only be started indoors.

Because of this, I’m going to teach you the ideal time to start kohlrabi seeds indoors in Colorado:

  • To Learn More About HOW to Grow Kohlrabi, Check Out This GUIDE!


When to Start Kohlrabi Seeds Indoors

Depending on the type of kohlrabi, it takes roughly 40-60 days (6 to 8 weeks) to grow kohlrabi from seed indoors before you can transplant them into your garden.

The approximate date of when you should start your kohlrabi seeds indoors can be found by:

  • Finding the last average frost date HERE
  • And then subtract 60 days from it

You can also find the average last frost date for most major cities in the below chart that I have created:

Colorado Frost Dates

To help ensure the greatest success of your kohlrabi seeds germinating you should:

  • Use a heat mat to ensure the gardening pot remains at 70 degrees Fahrenheit
  • Use a grow light to control how much light your kohlrabi seeds receive
  • Water your seeds with a spray bottle to ensure your seeds are not overwatered

It should also be noted that you will not want to introduce your kohlrabi plants into your garden until 2 weeks after your last frost or else your plant will potentially die or not bear vegetables.

If you want to learn WHEN to start ANY Vegetable Seed in Colorado, head over to HERE and just type in the vegetable you want to grow.

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