Are USDA Hardiness Zones Useless?

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How many of you have seen planting calendars for USDA Hardiness Zones that tell you when to plant?

Like, "𝘡𝘰𝘯𝘦 8 𝘨𝘢𝘳𝘥𝘦𝘯𝘦𝘳𝘴: 𝘱𝘭𝘢𝘯𝘵 𝘵𝘩𝘦𝘴𝘦 𝘤𝘳𝘰𝘱𝘴 𝘪𝘯 𝘚𝘦𝘱𝘵𝘦𝘮𝘣𝘦𝘳!" Or, "𝘏𝘦𝘳𝘦'𝘴 𝘸𝘩𝘢𝘵 𝘵𝘰 𝘱𝘭𝘢𝘯𝘵 𝘳𝘪𝘨𝘩𝘵 𝘯𝘰𝘸 𝘪𝘧 𝘺𝘰𝘶 𝘭𝘪𝘷𝘦 𝘪𝘯 𝘡𝘰𝘯𝘦 5."

Well, I hate to break it to ya, but your USDA Hardiness Zone doesn't actually tell you much about your growing season or when you should plant things.

In fact, people in the exact same zone can experience wildly different summer temperatures, rainfall, humidity, frost dates, and growing seasons.

Just take a look at the USDA Hardiness Zone map I attached below.

I put pins on the map for Oregon, Texas, and North Carolina.

If we handed gardeners in all three locations the exact same planting calendar just because they're all in Zone 8...

My spidey senses tell me at least one of them would have some less-than-ideal results.

Agree?

So if our USDA zone can't tell us 𝘄𝗵𝗲𝗻 𝘁𝗼 𝗽𝗹𝗮𝗻𝘁, what 𝘤𝘢𝘯 it tell us?

It actually gives us one very valuable piece of information:

👉 𝗧𝗵𝗲 𝗮𝘃𝗲𝗿𝗮𝗴𝗲 𝗮𝗻𝗻𝘂𝗮𝗹 𝗲𝘅𝘁𝗿𝗲𝗺𝗲 𝗺𝗶𝗻𝗶𝗺𝘂𝗺 𝘄𝗶𝗻𝘁𝗲𝗿 𝘁𝗲𝗺𝗽𝗲𝗿𝗮𝘁𝘂𝗿𝗲 𝗳𝗼𝗿 𝘆𝗼𝘂𝗿 𝗮𝗿𝗲𝗮.

This is especially useful when choosing perennial crops (plants that live for more than two years) because it helps you determine whether a plant can survive your winters and how much winter protection it may need.

But as far as telling you when to plant your vegetable garden?

It's basically useless 🤣

So now if you're thinking...

"𝗪𝗲𝗹𝗹 𝘁𝗵𝗲𝗻 𝗵𝗼𝘄 𝘁𝗵𝗲 𝗵𝗲𝗰𝗸 𝗗𝗢 𝗜 𝗸𝗻𝗼𝘄 𝘄𝗵𝗮𝘁 𝘁𝗼 𝗽𝗹𝗮𝗻𝘁?!"

I got you.

To answer that question, we want to look at things like:

Your average first and last frost
Your average first and last hard freeze
Choosing crops based on their preferred growing season
How to read the "days to maturity" number on the back of the seed packet (and how to use it to your advantage).
Microclimates within your own garden
And season extenders that can help you keep growing longer

I covered allll of this (and more) in the 𝗙𝗮𝗹𝗹 𝗚𝗮𝗿𝗱𝗲𝗻 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 𝗪𝗼𝗿𝗸𝘀𝗵𝗼𝗽 I hosted last month.

And if you missed it, the workshop replay + the 𝟵-𝗽𝗮𝗴𝗲 𝗰𝗼𝗺𝗽𝗮𝗻𝗶𝗼𝗻 𝘄𝗼𝗿𝗸𝗯𝗼𝗼𝗸 are both waiting for you inside the DIY Gardening Academy.

The workbook walks you through actually applying everything from the workshop to 𝘆𝗼𝘂𝗿 𝗼𝘄𝗻 𝗴𝗮𝗿𝗱𝗲𝗻 so you can figure out what to grow, when to plant it, and how long you can realistically keep growing.

You can join the Academy with a 𝟳-𝗱𝗮𝘆 𝗳𝗿𝗲𝗲 𝘁𝗿𝗶𝗮𝗹, watch the workshop, grab the workbook, explore everything else inside, and cancel anytime with the click of a button.

𝗗𝗶𝗱 𝘆𝗼𝘂 𝗸𝗻𝗼𝘄 𝘁𝗵𝗶𝘀 𝗮𝗯𝗼𝘂𝘁 𝗨𝗦𝗗𝗔 𝘇𝗼𝗻𝗲𝘀?

🌱 I had NO idea!

🤔 I knew something was off about them, but wasn't sure what

😎 Sure did!

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Are USDA Hardiness Zones Useless?