From Crispy Summer Beds to a Fresh Fall Garden 🌱🍂

With Oklahoma temperatures staying in the triple digits for what feels like forever, it's hard to imagine that another season is actually coming.

But fall will be here before we know it, and in Oklahoma, our window between scorching summer temperatures and that first hard freeze can feel pretty short.

If you want a successful fall garden, you've gotta start planning now! 💯

And if your vegetable beds look anything like mine, you probably have at least one summer crop that is officially...

Toast. Crispy. Fried. And possibly insect-nibbled beyond recognition.

And no, one more watering will not magically bring it back. Sorry. 😂

But that ending gives us something even better:

Room for a new beginning—and a fall garden!

1. Clear & Clean

First, take a good look at what is growing and decide what has earned the right to stay.

Remove spent plants

Pull out heat-weary summer crops that have stopped producing. Squash, cucumbers, beans and other plants that are diseased, heavily damaged or simply finished can go.

Don't keep watering a plant for another month just because you feel guilty pulling it. If it's done, it's done.

Clean up the bed

Remove dead leaves, fallen fruit, weeds and other plant debris. These can provide hiding places for pests and allow some diseases to linger in the garden.

If you had noticeable pest or fungal problems, identify what you're dealing with before treating the bed. Use an appropriate garden-safe or organic treatment when needed, and avoid putting heavily diseased plant material into your regular compost pile.

Keep what is still working

Not everything has to go!

Healthy indeterminate tomatoes, peppers, herbs and other summer crops can sometimes get a second wind as temperatures become more reasonable.

If they're healthy, producing and aren't taking up space you need for your fall garden, let them stay!

2. Amend & Refresh Your Soil

Your soil has worked hard all summer too.

Tomatoes, squash, cucumbers and other heavy-producing crops pull nutrients from the soil, while Oklahoma heat and repeated watering can leave the surface dry and compacted.

Use a hand fork or cultivator to gently loosen the top few inches of soil. There's no need to completely turn over the bed and disturb everything happening underneath it.

Then replenish what your summer garden used.

Add a layer of good-quality compost or well-aged manure and gently work it into the surface. If you use additional fertilizer, remember that more isn't always better. Consider what you're planting next and amend accordingly.

If you're unsure what your soil actually needs, a soil test can save you from adding nutrients you already have plenty of.

Finally, mulch.

Straw is my go-to.

A good layer of mulch helps protect soil from our intense late-summer sun, reduces evaporation, moderates soil temperature and helps suppress weeds.

3. Plan Around Your First Frost—Not Just the Calendar

This is one of the biggest differences between spring and fall gardening.

In spring, we're waiting for things to warm up.

In fall, we're racing the clock in the other direction.

Central Oklahoma's first fall frost generally arrives sometime in late October into early November, although Oklahoma weather obviously doesn't read gardening calendars.

When choosing fall crops, look at the days to maturity listed on the seed packet or plant tag and count backward from your area's expected first frost.

And give yourself a little wiggle room.

Cooler temperatures and shorter days can slow growth later in the season, so something labeled "60 days" doesn't necessarily mean you should plant it exactly 60 days before your expected frost.

4. Plant What You'll Actually Eat

Yes, beets grow beautifully in a fall garden.

No, that does not mean you need three rows of beets if nobody in your house actually eats beets. 😂

Garden space, water, compost, seeds and—most importantly—your time all have value.

Choose crops your household will actually use.

The Oklahoma State University Extension has excellent information about fall gardening and recommended planting dates for different areas of Oklahoma. A little research before planting can save a lot of money, work and disappointment later.

Leafy greens

Fall is a great time for:

- Kale

- Spinach

- Leaf lettuce

- Swiss chard

- Mustard greens

I personally like using a combination of starter plants and seeds.

I'll plant a few established starts for an earlier harvest and direct-sow additional seeds nearby. Then I can sow another small section later instead of having everything mature at once.

That's called succession planting, and it can extend your harvest considerably.

Root crops

Many root crops prefer being planted directly where they'll grow:

- Radishes

- Carrots

- Beets

- Turnips

Radishes are especially fun because they're quick. They're also great for filling little gaps in the garden while slower crops are growing.

Brassicas

Fall favorites include:

- Broccoli

- Cabbage

- Cauliflower

- Brussels sprouts

These are often easier to establish as transplants rather than trying to get tiny seedlings going outside during Oklahoma's August heat.

Starting seedlings indoors in late summer gives them time to develop while we're still waiting for outdoor temperatures to become a little less... hostile. 🔥

5. Remember: It's Fall Gardening in SUMMER Weather

This is probably the trickiest part of growing a fall garden in Oklahoma.

We're planting cool-season crops when Mother Nature is still giving us summer temperatures.

Give young plants some shade

Young seedlings and transplants can struggle under intense August and early September sun.

Temporary shade cloth can make a huge difference.

You aren't trying to put the garden into darkness—you're simply reducing the intensity of the afternoon sun while those plants establish themselves.

As temperatures moderate and plants become established, gradually remove the extra protection.

Keep the seedbed moist

Seeds and tiny seedlings have shallow root systems.

That means your normal deep-watering schedule may not be enough when you're trying to germinate fall crops in hot soil.

Newly planted seeds may need light, frequent watering—even daily during very hot weather—to keep the top layer of soil consistently moist.

Once plants become established and roots grow deeper, you can transition back toward deeper, less frequent watering.

Mulch is a MUST

Apply approximately 2–3 inches of straw, shredded leaves or another suitable organic mulch around established plants.

It helps cool the soil and holds onto precious moisture.

Just don't bury tiny seedlings under it. Give them a little breathing room.

6. Don't Forget the Bugs

Unfortunately, the pests haven't read the fall gardening calendar either.

Warm late-summer temperatures can mean plenty of insect activity.

Watch young plants closely for:

- Aphids

- Flea beetles

- Spider mites

- Caterpillars

- Other chewing insects

Check the undersides of leaves, too. That's where a lot of trouble likes to hide.

Catching a problem when it's small is much easier than discovering a full-blown infestation after it has taken over your beautiful new fall garden.

BONUS TIP: Prepare for Oklahoma's Mood Swings

You know how this works.

It'll be 86 degrees one afternoon and suddenly we're hearing about an overnight cold snap.

Don't wait until the weather forecast says "FROST TONIGHT!" to start searching the garage for something to cover your plants.

Prepare now.

Simple hoops, frost cloth or row covers can help protect fall crops through an unexpected cold dip. Many cool-season vegetables actually tolerate light frost quite well, and some can continue producing long after our summer garden has finished.

Having your setup ready means you can cover the garden in a few minutes instead of scrambling at 9 p.m. with old sheets and whatever else you can find.

(We've all been there.) 😂

Summer's Ending Doesn't Mean the Garden Is Done

By late August, my Oklahoma garden rarely looks like the lush, hopeful garden I planted in spring.

Some plants thrived.

Some struggled.

Some became very expensive snacks for insects.

That's gardening.

But one of my favorite things about growing food is that the end of one season creates space for another.

Clear what is finished. Feed your soil. Protect those tender new plants from the lingering Oklahoma heat. Plant foods your family will actually enjoy.

And then start again. 🌱

Because while Oklahoma may still feel like summer...

your fall garden starts now.

Educational gardening information only. Planting dates, frost dates and growing conditions vary throughout Oklahoma and from year to year. For Oklahoma-specific planting calendars and research-based recommendations, consult the Oklahoma State University Extension and your local county Extension office.