One of the most common questions I get from gardeners every spring is “when should I start my seeds?” And the answer surprises a lot of people.

A lot of gardeners think that seeds should be started in January because garden centers start putting out seed displays in January. But seeds don’t follow store calendars. They follow your last frost date.

So instead of starting seeds based on the month, we start them by counting backward from our average last frost date.

And here’s the easy way to do it, with any seeds you’ll be starting this year:

Step 1: Know your last frost date

Your last frost date is the average date your area stops freezing overnight.
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For many cold-climate gardeners (like here in the Midwest), that’s usually sometime in late April or early May.
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This date becomes your anchor for everything else.

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(If you don’t know your last frost date yet, simply search “your city + last frost date” in Google)

Step 2: Count backward

Every seed packet tells you how many weeks before your last frost to start seeds indoors.
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You’ll usually see something like:

• Start tomatoes indoors 6–8 weeks before last frost

• Start peppers indoors 8–10 weeks before last frost

• Start cucumbers indoors 3–4 weeks before last frost

So if your last frost is May 5:

• Tomatoes → mid-March
• Peppers → early March
• Cucumbers → mid-April

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Not February. Not January.
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Which leads to the next step…

Step 3: Later is often better than earlier

This might sound backwards, but seedlings started too early often struggle more than ones started at the right time, or even a little late.

When seeds are started too soon, plants can become:

• Leggy and weak
• Root-bound in small containers
• Stressed before they ever reach the garden

A slightly smaller, healthy plant almost always outperforms an oversized indoor plant that’s been waiting too long to go outside.

So… when should you start seeds?

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Right now is actually the perfect time to do one simple thing:

Make your seed starting plan.

Look up your last frost date, check your seed packets, and write down when each crop should be started. That small step removes so much guesswork later.

If you’ve downloaded my Garden Planning Starter Kit, there’s a page in there specifically for organizing seed starting. I write down each crop and then the “sow date” is the date I need to plant my seeds, give or take a few days. If you need the link to my Starter Kit, just hit reply and I’ll get it right to you.
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Happy growing! 🌱

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Liz