Do you want to grow blue star flower in Idaho, but don’t know when to plant them?
Planting blue star flower is not as easy as it seems.
- Blue Star Flower are not able to survive frost or cold weather under 50 degrees Fahrenheit.
So if you plant them outside too early in the spring they will die. And if you plant them too late, your blue star flower won’t produce a bloom.
Today, I’m going to teach you the ideal time to plant blue star flower in Idaho:
- To Learn More About HOW to Grow Blue Star Flower, Check Out This GUIDE!
When to Plant Blue Star Flower in Idaho
As you may have already guessed, you need to pay very close attention to your local weather in the spring. Specifically, you are going to need to watch when the last frost occurs.
In general, when there hasn’t been a frost for two weeks, you are SAFE to plant your blue star flower outside in Idaho!
For your reference, I have created this table for average frost dates for most major cities in Idaho. If your city is not listed below you can find its Last & First Frost Dates HERE.
Idaho Last & First Frost Dates
Unfortunately, Mother Nature plays cruel tricks on us every year.
It should be noted that the above dates are just averages.
There are years when the last frost comes MUCH later. Sometimes, the last frost happens much earlier and you can get your blue star flower planted outside in Idaho much quicker.
Like I said before, you need to be very diligent in checking your local weather.
So what happens if a frost comes AFTER you plant your blue star flower?
When you know a frost is coming you need to take action.
- If blue star flower are in pots, bring them inside
- If blue star flower are in the ground, cover them in burlap and hope they survive
Also, make sure not to plant your blue star flower in your garden too late.
- Planting blue star flower too late will cause small blooms or even worse, no blooms.
When Should You Start Your Blue Star Flower Seeds Indoors?
Depending on the type of blue star flower, it takes roughly 28-42 days (4 to 6 weeks) to grow blue star flower from seed indoors and then transplant them to your garden. And then another 2 to 3 years to bloom!
For a specific date that you should start blue star flower seeds indoors you should:
- Find the last average frost date HERE
- And then subtract 28 days from it
Not only this, but I recommend again paying close attention to your local weather report.
It should also be noted that the best technique for bringing your blue star flower plants outside is to introduce them (in their pots) outside for an hour. And then increase the amount of time they spend outside each day by an hour until they have been outside for 8 hours.
This will “harden” your blue star flower plant, increasing its chances of fighting off diseases, insects, droughts, and wet conditions.
If you want to learn WHEN to plant ANY Flower in Idaho, head over to HERE and just type in the flower you want to grow.