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Here is the BEST Time to Plant Collard Greens in California (2022)

Do you want to grow collard greens in California, but don’t know when to plant them?

Planting collard greens is not as easy as it seems.

Here’s why:

  • Collard Greens 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 collard greens 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 collard greens in California:

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


When to Plant Collard Greens in California

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 collard greens outside in California!

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

California Last & First Frost Dates

California 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 collard greens planted outside in California 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 collard greens?

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

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

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

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


When Should You Start Your Collard Greens Seeds Indoors?

Depending on the type of collard greens, it takes roughly 30-40 days to grow collard greens from seed indoors and then transplant them to your garden.

For a specific date that you should start collard greens seeds indoors you should:

  • Find the last average frost date HERE
  • And then subtract 40 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 collard greens 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 collard greens plant, increasing its chances of fighting off diseases, insects, droughts, and wet conditions.

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

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