Just Grow Something | Evidence-Based Home Gardening

Karin Velez
  • 4.8 (72)
  • HOME & GARDEN
  • UPDATED WEEKLY

Grow a better vegetable garden, whether you're a seasoned gardener or have never grown a thing in your life. Karin helps home gardeners learn to grow their own food using evidence-based techniques and research. She talks all about specific plants, pests, diseases, soil and plant health, mulch, garden planning, and more. It's not just the "how" but also the "why" that makes us better. The goal? For everyone to know how to grow their own food no matter what sized space they have or their experience level. Tune in each week to plan, learn, and grow with your friend in the garden, Karin Velez.

  1. Interplanting Done Right: The High, Low, Fast, Slow Method for Bigger Harvests - Ep. 295

    3D AGO

    Interplanting Done Right: The High, Low, Fast, Slow Method for Bigger Harvests - Ep. 295

    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 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 Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

    42 min
  2. Your Greenhouse Operating Manual - Ep. 294

    MAR 31

    Your Greenhouse Operating Manual - Ep. 294

    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   Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

    41 min
  3. Greenhouse Tradeoffs: Heat, Humidity, Pests, and Practicality - Ep. 293

    MAR 24

    Greenhouse Tradeoffs: Heat, Humidity, Pests, and Practicality - Ep. 293

    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 Amazon storefront: https://www.amazon.com/shop/justgrowsomething   Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

    27 min
  4. How to Pick the Right Greenhouse, Tunnel, or Cold Frame - Ep. 292

    MAR 17

    How to Pick the Right Greenhouse, Tunnel, or Cold Frame - Ep. 292

    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 Amazon storefront: https://www.amazon.com/shop/justgrowsomething Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

    43 min
  5. Hardening Off Homegrown AND Storebought Seedlings - Ep. 291

    MAR 10

    Hardening Off Homegrown AND Storebought Seedlings - Ep. 291

    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/ Check out how you can become a patron on Patreon: https://www.patreon.com/JustGrowSomething Bonus content for supporters of the Podcast: https://buymeacoffee.com/justgrowsomething Amazon storefront: https://www.amazon.com/shop/justgrowsomething   Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

    30 min
  6. How to Time Seed Starting for Your Garden: Start Dates That Make Sense - Ep. 290

    MAR 3

    How to Time Seed Starting for Your Garden: Start Dates That Make Sense - Ep. 290

    Timing your seed starting shouldn't be hard. There are plenty of calendars to follow, right? Until following a calendar means you start too early, run out of space, and end up babysitting leggy, root-bound seedlings for weeks. Or you start too late and miss the planting window you planned for. So, today on Just Grow Something, we're connecting the dots between frost dates, planting calendars, and harvest windows to build a seed-starting schedule that fits your garden and your climate. You’ll learn which crops are best started indoors vs direct sown, which plant families need a long “grow-on” period, how to avoid common timing traps, and a step-by-step way to pick seed-starting dates based on your planned transplant date or your desired harvest window. Let's dig in! If you need some additional help with starting your seeds indoors, it’s not too late in the season to take my Seed to Sprout course. In about 90 minutes you’ll know everything you need to know about getting your seeds started in the proper containers, with the right balance of lighting, water, and air flow, and how to get them transitioned to the garden with very little shock or damage. https://www.justgrowsomething.com/indoor-seed-starting   University of Missouri Extension — Starting Plants Indoors From Seeds: https://extension.missouri.edu/publications/g6570 Illinois Extension (Good Growing) — When should I start my seeds?: https://extension.illinois.edu/blogs/good-growing/2023-02-10-when-should-i-start-my-seeds   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 Bonus content for supporters of the Podcast: https://buymeacoffee.com/justgrowsomething Amazon storefront: https://www.amazon.com/shop/justgrowsomething   Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

    29 min
  7. Spring Garden Bed Preparation - Ep. 289

    FEB 24

    Spring Garden Bed Preparation - Ep. 289

    If you want an easier garden season, February is the time to set the foundation. Two steps do most of the heavy lifting: getting a soil test and prepping beds without damaging soil structure. Done well, these tasks reduce fertilizer guesswork and improve root growth. You can do a lot right now that sets you up for success without rushing into two classic mistakes: 1. throwing amendments at the garden without knowing what the soil actually needs, and 2. working soil while it’s still too wet, which can damage structure for the long haul. So, today on Just Grow Something, I’m walking you through what a soil test can (and can’t) tell you, exactly how to collect a sample that’s representative of your whole garden, the key parts of a soil report that matter most for vegetables, and bed prep steps you can do now that improve soil instead of compacting it. Let’s dig in! Resources: My Seed to Sprout course is waiting for you here: https://justgrowsomething.com/indoor-seed-starting My free Seed Starting eBook is here: https://justgrowsomethingpodcast.com/seedbook Soil amendment episodes and articles: https://justgrowsomethingpodcast.com/search/amendments How to calculate how much fertilizer to add to the garden: https://justgrowsomethingpodcast.com/blog/how-much-fertilizer-to-add-to-your-garden References: How temperature affects the rate of nitrification: https://livetoplant.com/how-temperature-influences-the-rate-of-nitrification/ Guide to Collecting Soil Samples - Oregon State University: https://extension.oregonstate.edu/catalog/ec-628-guide-collecting-soil-samples-farms-gardens Soil Compaction from Wet Soils - Purdue University Extension: https://www.purdue.edu/hla/sites/yardandgarden/resist-the-urge-to-work-wet-soil/ Add Organic Matter to Improve Most Garden Soils - Oregon State University: https://extension.oregonstate.edu/news/add-organic-matter-improve-most-garden-soils Just Grow Something: https://justgrowsomething.com 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 Bonus content for supporters of the Podcast: https://buymeacoffee.com/justgrowsomething Amazon storefront: https://www.amazon.com/shop/justgrowsomething Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

    20 min
  8. Indoor Seedling Troubleshooting - Ep. 288

    FEB 17

    Indoor Seedling Troubleshooting - Ep. 288

    Today is a clinic episode, a Seedling Troubleshooting Clinic to be exact, because if you’re starting seeds indoors, something is eventually going to look weird. A tray that was perfect yesterday is suddenly leaning. Something looks fuzzy on the soil surface. Or a seedling that seemed fine just flops over. The good news is most seedling problems come from a small handful of causes, causes that we can actually control - light, temperature, water, airflow, or sanitation. And once you know what you’re looking at, you can usually fix it quickly or at least stop it from spreading to the rest of your tray. So, I’m going to give you a simple diagnostic checklist and then we’ll walk through the most common seedling symptoms and what to do about each one. Let's dig in! Get my FREE seed starting ebook: https://justgrowsomethingpodcast.com/seedbook Take my comprehensive course for indoor seed starting, Seed to Sprout: https://justgrowsomething.com/indoor-seed-starting Just Grow Something episodes, videos and blog posts on seed starting: https://justgrowsomethingpodcast.com/search/seed%20starting References and resources: University of Illinois Extension: Troubleshooting seed starting problems: https://extension.illinois.edu/blogs/good-growing/2022-02-25-whats-wrong-my-seedlings-troubleshooting-seed-starting-problems University of Minnesota Extension: How to prevent seedling damping off: https://extension.umn.edu/solve-problem/how-prevent-seedling-damping Utah State University Extension: Seedling culture, airflow, temps: https://extension.usu.edu/yardandgarden/research/starting-vegetable-seeds-indoors-seeding-culture-and-transplanting.pdf Just Grow Something: https://justgrowsomething.com 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 Bonus content for supporters of the Podcast: https://buymeacoffee.com/justgrowsomething Amazon storefront: https://www.amazon.com/shop/justgrowsomething Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

    22 min
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4.8
out of 5
72 Ratings

About

Grow a better vegetable garden, whether you're a seasoned gardener or have never grown a thing in your life. Karin helps home gardeners learn to grow their own food using evidence-based techniques and research. She talks all about specific plants, pests, diseases, soil and plant health, mulch, garden planning, and more. It's not just the "how" but also the "why" that makes us better. The goal? For everyone to know how to grow their own food no matter what sized space they have or their experience level. Tune in each week to plan, learn, and grow with your friend in the garden, Karin Velez.

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