Just Grow Something | Evidence-Based Home Gardening

What if you could get more food from the exact same garden space, without expanding a single bed? That's the promise of interplanting, and today on Just Grow Something I break down exactly how to do it right.

Building on the "high, low, fast, slow" mantra I use in my own garden and teach in my Plan Like a Pro course, I walk you through the framework that makes interplanting work and the common mistakes that turn it into overcrowding. I cover what to consider before you ever put two plants together (mature size, water needs, nutrient timing, and allelopathy), then get practical with six beginner-friendly pairings that are low-risk and high-reward, plus advanced combinations and experiments for experienced gardeners ready to push further.

I've also put together a clear list of dos and don'ts to keep on hand when you're planning your beds.

In this episode:

What interplanting, intercropping, and companion planting actually mean

The "high, low, fast, slow" framework and how to apply it to any bed

What to know about your plants before pairing them (and what can go wrong if you don't)

Six beginner pairings: tomatoes + basil, lettuce + tomatoes, radishes + carrots, peas + spinach, garlic + peppers, cucumbers + lettuce

Advanced ideas: trap cropping, stacked seasonal beds, the Three Sisters and beyond

A full dos and don'ts list for interplanting success

Let's dig in!
Episode References

Episode 180: Interplanting to Maximize Your Harvest: https://justgrowsomethingpodcast.com/episode/interplanting-to-maximize-your-harvest-ep-180

Episode 247: Smarter Planting for Bigger Harvests – Interplanting Strategies: https://justgrowsomethingpodcast.com/episode/smarter-planting-for-bigger-harvests-interplanting-strategies-ep-247

254 – Spring Interplanting Strategies: What Worked, What Flopped, and Why: https://justgrowsomethingpodcast.com/episode/spring-interplanting-strategies-what-worked-what-flopped-and-why-ep-254

Resources

"Gardening with the Moon Around the World" by Vergers du Monde: https://amzn.to/4cuSmcj

Companion Planting Chart download: https://justgrowsomethingpodcast.com/companion

Days to Maturity reference chart: https://justgrowsomethingpodcast.com/maturity

Just Grow Something Garden Planning Workbook: https://justgrowsomething.com/shop/p/just-grow-something-garden-planning-workbook

Plan Like a Pro Course: https://justgrowsomething.thinkific.com

Quick-Reference: Beginner Pairings

Tomatoes + Basil — HIGH/SLOW + LOW/MED

Lettuce + Tomatoes — LOW/FAST + HIGH/SLOW

Radishes + Carrots — FAST + SLOW

Peas + Spinach — HIGH/FAST + LOW/SLOW

Garlic/Onions + Peppers — timing/space efficiency

Cucumbers on trellis + Lettuce beneath — HIGH/SLOW + LOW/FAST

Next week: succession planting — the strategy that keeps your beds productive across time, not just space.

Get 10% off and FREE shipping on my favorite raised planters at Planter Box Direct using code JUSTGROW10: https://planterboxdirect.com/?ref=593
Just Grow Something: https://justgrowsomething.com

Gardening Courses: https://justgrowsomething.com/courses

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Get my greenhouse selection guide to help you choose which protected growing structure is right for you: https://justgrowsomethingpodcast.com/greenhouse

A protected growing structure isn’t “set it and forget it” but a microclimate you manage. In this final episode of our greenhouse mini-series, you’ll get a practical operating manual for cold frames, low tunnels, caterpillar tunnels, high tunnels, and home greenhouses.

We’ll cover ventilation, heating and cooling strategies, watering and irrigation basics, container vs raised-bed vs in-ground considerations, pollination management, and an evidence-based approach to pest and disease control.

We’ll also tackle a topic many gardeners miss until something goes wrong: soil health under cover, including salt buildup, nutrient imbalances, and why protected soils often need a different fertility strategy than open-field beds.

Let’s dig in!

Resources:

The thermometer/hygrometer I use to monitor my greenhouse and other garden structures: https://amzn.to/4th56Ja

NRCS (USDA) — Controlling the High Tunnel Environment: https://www.nrcs.usda.gov/sites/default/files/2022-10/Controlling-High-Tunnel-Environment.pdf

Oklahoma State University Extension — The Hobby Greenhouse: https://extension.okstate.edu/fact-sheets/the-hobby-greenhouse-2

Just Grow Something: https://justgrowsomething.com

Gardening Courses: https://justgrowsomething.com/courses

Just Grow Something Merch and Downloads: https://justgrowsomething.com/shop

Just Grow Something Gardening Friends Facebook Group: https://www.facebook.com/share/g/18YgHveF5P/

Check out how you can become a patron on Patreon: https://www.patreon.com/JustGrowSomething

Feed my coffee habit: https://buymeacoffee.com/justgrowsomething

Amazon storefront: https://www.amazon.com/shop/justgrowsomething

 

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Get my free guide to choosing which protected gardening structure you should choose - https://justgrowsomethingpodcast.com/greenhouse

Protected growing structures like greenhouses can be game-changers - earlier harvests, fewer rain-splashed diseases, better crop quality, and more reliable timing. But they also create a new microclimate with new rules: overheating, humidity spikes, irrigation demands, shifting pest pressure, and sometimes pollination problems.

Today on Just Grow Something, we break down what problems protected culture solves, what it tends to make harder, and how to predict those tradeoffs before you invest. You’ll learn the core principals of tunnels and greenhouses, like temperature, humidity, airflow, and water, plus what changes when you grow in containers, raised beds, or in-ground under cover.

Let’s dig in!

Resources:

High Tunnels and Other Season Extension Techniques - SARE: https://www.sare.org/resources/high-tunnels-and-other-season-extension-techniques/

NRCS (USDA) — Controlling the High Tunnel Environment: https://www.nrcs.usda.gov/sites/default/files/2022-10/Controlling-High-Tunnel-Environment.pdf

 

Just Grow Something: https://justgrowsomething.com

Gardening Courses: https://justgrowsomething.com/courses

Just Grow Something Merch and Downloads: https://justgrowsomething.com/shop

Just Grow Something Gardening Friends Facebook Group: https://www.facebook.com/share/g/18YgHveF5P/

Check out how you can become a patron on Patreon: https://www.patreon.com/JustGrowSomething

Feed my coffee habit: https://buymeacoffee.com/justgrowsomething

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Download my Protected Growing Quick Guide to help you make the decision on what type of structure would work best in your garden: https://justgrowsomethingpodcast.com/greenhouse

Thinking about a greenhouse but not sure if you really need one? There are some beautiful and expensive options out there, but greenhouses aren’t the only option for extending the season your garden.

Today on Just Grow Something, we map out the full spectrum of protected growing structures for home gardeners: from cold frames and covered shelving to low tunnels, caterpillar tunnels, hoop houses/high tunnels, and home greenhouses. You’ll learn what each option is best for, how to match a structure to your goals, space, budget, and maintenance tolerance, and which “hidden factors” make or break success, like site selection, orientation, wind exposure, and snow load. By the end, you’ll have a clear decision framework so you can choose a protected structure that fits your garden and your life, not just your Pinterest board.

Resources:

Cornell High Tunnels: Structures - https://blogs.cornell.edu/hightunnels/structures/

Penn State Extension: Season Extenders - https://extension.psu.edu/season-extenders-and-growing-fall-vegetables

Oklahoma State University Extension: The Hobby Greenhouse: https://extension.okstate.edu/fact-sheets/the-hobby-greenhouse-2.html

 

Just Grow Something: https://justgrowsomething.com

Gardening Courses: https://justgrowsomething.com/courses

Just Grow Something Merch and Downloads: https://justgrowsomething.com/shop

Just Grow Something Gardening Friends Facebook Group: https://www.facebook.com/share/g/18YgHveF5P/

Check out how you can become a patron on Patreon: https://www.patreon.com/JustGrowSomething

Feed my coffee habit: https://buymeacoffee.com/justgrowsomething

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Hardening off is the difference between sturdy transplants that take off fast and seedlings that stall, scorch, or collapse after planting.

Today on Just Grow Something, you’ll learn what to do indoors before hardening off, a simple step-by-step hardening-off schedule (including temperature guidelines, shade vs. sun, wind protection, and watering adjustments), and what to watch for when you transplant.

We’ll also cover the “mystery variable” of purchased seedlings and how to treat garden-center starts if you’re not sure they’ve been acclimated.

Then, in the second half, we’ll talk about how the process changes when you’re using a greenhouse, cold frame, or high tunnel and why protected structures can help without eliminating the need to transition plants carefully.

Let’s dig in!

Resources:

University of Maryland Extension — Hardening Off Vegetable Seedlings for the Home Garden: https://extension.umd.edu/resource/hardening-vegetable-seedlings-home-garden/

NC State Extension Gardener Handbook — Season Extenders and Greenhouses: https://content.ces.ncsu.edu/extension-gardener-handbook/appendix-e-season-extenders-and-greenhouses

Iowa State University Extension — All about Cold Frames: https://www.extension.iastate.edu/news/yard-and-garden-all-about-cold-frames

 

Just Grow Something: https://justgrowsomething.com

Gardening Courses: https://justgrowsomething.com/courses

Just Grow Something Merch and Downloads: https://justgrowsomething.com/shop

Just Grow Something Gardening Friends Facebook Group: https://www.facebook.com/share/g/18YgHveF5P/

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Bonus content for supporters of the Podcast: https://buymeacoffee.com/justgrowsomething

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