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Here is the BEST Time for Lilac Blooms in Pennsylvania (2023 Guide)

Are you growing lilac in Pennsylvania, but don’t know when they’ll bloom?

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

Here’s why:

  • Lilac 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 lilac to bloom in Pennsylvania:

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


When Do Lilac Bloom in Pennsylvania?

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

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

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

In general, expect the following:

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

Pennsylvania Last & First Frost Dates

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

pennsylvania frost dates

Bloom Time Depends on the weather!

In general, lilac will bloom:

  • 3 to 4 years after starting lilac from seed
  • 3 years after planting lilac in your yard

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

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