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Here is the BEST Time to Plant Fennel in Massachusetts (2022)

Do you want to grow fennel in Massachusetts, but don’t know when to plant them?

Planting fennel is not as easy as it seems.

Here’s why:

  • Fennel 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 fennel won’t produce a harvest before the first frost arrives in the fall.

Today, I’m going to teach you the ideal time to plant fennel in Massachusetts:

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


When to Plant Fennel in Massachusetts

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 fennel outside in Massachusetts!

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

Massachussetts Last & First Frost Dates

massachusetts 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 fennel planted outside in Massachusetts 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 fennel?

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

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

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

  • Planting fennel too late will cause small fennel or even worse, no fennel.


When Should You Start Your Fennel Seeds Indoors?

Depending on the type of fennel, it takes roughly 45-50 days to grow fennel from seed indoors and then transplant them to your garden.

For a specific date that you should start fennel seeds indoors you should:

  • Find the last average frost date HERE
  • And then subtract 50 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 fennel 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 “hardened” your fennel plant, increasing its chances of fighting off diseases, insects, droughts, and wet conditions.

If you want to learn WHEN to plant ANY Vegetable in Massachusetts, head over to HERE and just type in the vegetable you want to grow.

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