Do you want to grow yarrow in Colorado , but do n’t know when to plant them ?
Planting yarrow is not as easy as it seems .
Here ’s why :

So if you implant them outdoors too too soon in the spring they will die . And if you establish them too of late , your Achillea millefolium wo n’t grow a bloom .
Today , I ’m get to teach you the ideal metre to plant yarrow in Colorado :
When to Plant Yarrow in Colorado
As you may have already reckon , you take to pay very close attention to your local weather in the spring . Specifically , you are hold out to need to watch when the last frost occurs .
In world-wide , when there has n’t been a frost for two weeks , you are SAFE to plant your yarrow outside in Colorado !
For your reference , I have create this table for average freeze dates for most major cities in Colorado . If your city is not listed below you could notice its Last & First Frost DatesHERE .

Colorado Last & First Frost Dates
unluckily , Mother Nature play roughshod trick on us every year .
It should be noted that the above dates are just averages .
There are years when the last frost comesMUCHlater . Sometimes , the last freeze find much earlier and you may get your yarrow planted outside in Colorado much faster .

Like I said before , you need to be very persevering in checking your local weather condition .
So what happens if a frost comes AFTER you plant your yarrow ?
When you know a frost is come you ask to take natural action .
Also , make certain not to implant your yarrow in your garden too deep .
When Should You Start Your Yarrow Seeds Indoors?
Depending on the type of Achillea millefolium , it take just about 14 to 28 days to get yarrow from seeded player indoors and then transpose them to your garden . And then another 120 day to bloom !
For aspecific datethat you should start milfoil seed indoors you should :
Not only this , but I recommend again paying close attention to your local weather study .
It should also be notice that the best technique for bringing your yarrow plants out of doors is to present them ( in their stack ) outside for an hour . And then increase the amount of time they spend outside each twenty-four hours by an hour until they have been outside for 8 hours .
This will “ harden ” your Achillea millefolium plant , increasing its luck of fighting off diseases , louse , droughts , and besotted status .
If you want to learnWHENto plantANYFlower in Colorado , head over toHEREand just type in the flower you want to grow .