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Here is the BEST Time for Catharanthus Blooms in Oklahoma (2023 Guide)

Are you growing catharanthus in Oklahoma, but don’t know when they’ll bloom?

Getting your Catharanthus to bloom is not as easy as it seems.

Here’s why:

  • Catharanthus have a small window when they bloom and still look great.

So if they bloom too early they may die or not last as long. And if they bloom too late they may have small blooms that don’t last long.

Today, I’m going to teach you the ideal time for catharanthus to bloom in Oklahoma:

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


When Do Catharanthus Bloom in Oklahoma?

As you may have already guessed, there are two main factors that determine when Catharanthus will bloom: where your Catharanthus are planted & weather (time).

Bloom Time Depends on Where Your Catharanthus Are Planted!!!

When your Catharanthus will bloom will depend on exactly where it is planted in your yard or garden

In general, expect the following:

  • If a catharanthus is planted in an area of your yard that receives full sun it will bloom around the same time every year or up to two weeks early due to warm weather and extra sunlight.
  • If a catharanthus is planted in an area of your yard that received partial sun it will bloom around the same time every year.
  • If a catharanthus is planted in an area of your yard that receives shade and is not protected from wind or rain it will bloom anywhere from 1 to 3 weeks later than its average time.

Oklahoma Last & First Frost Dates

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

oklahoma frost dates

Bloom Time Depends on the weather!

In general, catharanthus will bloom:

  • 180 days after starting catharanthus from seed
  • 150 days after planting catharanthus in your yard

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

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