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Here is the BEST Time for Penstemon Blooms in Delaware (2023 Guide)

Are you growing penstemon in Delaware, but don’t know when they’ll bloom?

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

Here’s why:

  • Penstemon 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 penstemon to bloom in Delaware:

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


When Do Penstemon Bloom in Delaware?

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

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

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

In general, expect the following:

  • If a penstemon 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 penstemon is planted in an area of your yard that received partial sun it will bloom around the same time every year.
  • If a penstemon 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.

Delaware Last & First Frost Dates

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

delaware frost dates

Bloom Time Depends on the weather!

In general, penstemon will bloom:

  • 4 to 6 months after starting penstemon from seed
  • 100 days after planting penstemon in your yard

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

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