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Here is the BEST Time to Plant Cerastium Tomentosum in Hawaii (2022 Guide)

Do you want to grow cerastium tomentosum in Hawaii, but don’t know when to plant them?

Planting cerastium tomentosum is not as easy as it seems.

Here’s why:

  • Cerastium Tomentosum 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 cerastium tomentosum won’t produce a bloom.

Today, I’m going to teach you the ideal time to plant cerastium tomentosum in Hawaii:

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


When to Plant Cerastium Tomentosum in Hawaii

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 cerastium tomentosum outside in Hawaii!

For your reference, I have created this table for average frost dates for most major cities in Hawaii. If your city is not listed below you can find its Last & First Frost Dates HERE.

Hawaii Last & First Frost Dates

hawaii 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 cerastium tomentosum planted outside in Hawaii 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 cerastium tomentosum?

When you know a frost is coming you need to take action.

  • If cerastium tomentosum are in pots, bring them inside
  • If cerastium tomentosum are in the ground, cover them in burlap and hope they survive

Also, make sure not to plant your cerastium tomentosum in your garden too late.

  • Planting cerastium tomentosum too late will cause small blooms or even worse, no blooms.


When Should You Start Your Cerastium Tomentosum Seeds Indoors?

Depending on the type of cerastium tomentosum, it takes roughly 14 to 25 days to grow cerastium tomentosum from seed indoors and then transplant them to your garden. And then another 720 days to bloom!

For a specific date that you should start cerastium tomentosum seeds indoors you should:

  • Find the last average frost date HERE
  • And then subtract 14 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 cerastium tomentosum 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 cerastium tomentosum plant, increasing its chances of fighting off diseases, insects, droughts, and wet conditions.

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

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