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Here is the BEST Time to Start Cotoneaster Seeds in Idaho (2022 Guide)

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

Starting cotoneaster seeds is not as easy as it seems.

Here’s why:

  • Cotoneaster Seeds must be consistently 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 Idaho’s growing season is not long enough, cotoneaster 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 cotoneaster seeds indoors in Idaho:

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


When to Start Cotoneaster Seeds Indoors

Depending on the type of cotoneaster, it takes roughly 25 days to grow cotoneaster from seed indoors before you can transplant them into your garden. And it could take 2 to 3 years for your cotoneaster to bloom!

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

  • Finding the first average frost date HERE
  • And then subtract 25 days from it

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

Idaho Frost Dates

To help ensure the greatest success of your cotoneaster 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 cotoneaster 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 cotoneaster plants into your garden until 2 weeks after your first frost or else your plant will potentially die or not bloom

If you want to learn WHEN to start ANY Flower Seed in Idaho, head over to HERE and just type in the flower you want to grow.

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