Summer Tomato Problems - Ep. 262

Summer Tomato Problems - Ep. 262

Author: Karin Velez August 12, 2025 Duration: 26:51

Is your summer tomato crop struggling with strange spots, brown mushy bottoms, or mysteriously vanishing leaves? You’re not alone! Mid-season brings a whole host of challenges for tomato gardeners, but with a little know-how, you can keep your plants thriving through to fall.

Today on Just Grow Something, I dig deep into the four biggest summer tomato problems: blossom end rot, tomato hornworms, nutrient imbalances, and common leaf diseases like Septoria and early blight. Learn how fluctuating moisture leads to blossom end rot (hint: it’s not just about calcium!), practical mulching and watering tips for every growing setup, including containers, raised beds, and in-ground gardens, and why choosing the right fertilizer at the right time can make all the difference.

I share a trick for spotting hornworms at night, how often to feed tomatoes in pots vs. beds, the signs and treatment of tomato leaf diseases, and the most effective organic control methods (from copper sprays to simple sanitation practices). I also share how to manage disease outbreaks, when to prune, and why fall tomato harvests are totally worth the effort.

Whether you’re a first-time tomato grower or a seasoned gardener facing a tough summer, this episode is packed with easy, practical solutions to keep your plants producing. Let’s dig in!


Save 20% on your new own-root rose plant at Heirloom Roses with code JUSTGROW at https://heirloomroses.com


Full show notes available at https://justgrowsomethingpodcast.com/episode/summer-tomato-problems-ep-262


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


Ever find yourself staring at a seed packet or a struggling tomato plant, wondering what it really needs to thrive? Just Grow Something | Evidence-Based Home Gardening digs into those questions, moving beyond folklore and guesswork. Host Karin Velez believes that understanding the science behind gardening-the "why" as much as the "how"-empowers you to become a more confident and successful grower. Each episode feels like a conversation with a knowledgeable friend, one who sifts through research and practical experience to offer clear, actionable advice. You’ll hear detailed discussions on everything from soil health and specific plant varieties to managing pests and planning your garden layout effectively. This podcast is designed for anyone with a patch of dirt or a few containers, whether you’ve been cultivating for decades or are just planting your first herb. Karin’s approach demystifies the process of growing your own food, making it accessible and deeply rewarding. The ultimate aim is simple but profound: to equip you with the reliable knowledge needed to harvest something delicious from your own space, season after season. Tune in for a grounded, thoughtful take on home gardening that celebrates both the triumphs and the learning moments inherent in getting your hands dirty.
Author: Language: English Episodes: 333

Just Grow Something | Evidence-Based Home Gardening
Podcast Episodes
Ep. 12 - Garden Talk Tuesday: Broccoli [not-audio_url] [/not-audio_url]

Duration: 40:17
On this Garden Talk Tuesday episode, we are talking all about broccoli. This is the first in many episodes to come where we dig deep into one particular crop and discover its origin, what conditions it grows best in, com…
Ep. 11 - Can You Dig It? Vol. 1 [not-audio_url] [/not-audio_url]

Duration: 40:17
It's our first "Can You Dig It" episode! Karin has a couple interesting gardening news stories to share and answers gardening questions from listeners about frost protection, growing tomatoes in containers, and the diffe…
Ep. 10 - Garden Talk Tuesday: Weed Prevention [not-audio_url] [/not-audio_url]

Duration: 30:39
This Garden Talk Tuesday we talk strategies for weed prevention, control, and removal. A pound of cure is worth an ounce of prevention is certainly true in the garden. Weeds can take up much of our time and resources if…
Ep. 9 - Eight Garden Trends for 2021 [not-audio_url] [/not-audio_url]

Duration: 18:30
This Focal Point Friday we’re looking at garden trends for this year, both for the veggie gardener and the flower gardener or home landscaper. 2020 and pandemic life saw crazy upticks in the number of people working from…
Ep. 8 - Growing Zones and Frost Protection In The Garden [not-audio_url] [/not-audio_url]

Duration: 28:17
This Garden Talk Tuesday we define what a growing zone is, according to the USDA Hardiness Zone map, and talk about what items you should keep on hand to help protect your tender garden seedlings from and unexpected fros…
Ep. 7 - The Science Behind Why Gardening Is Good For Your Health [not-audio_url] [/not-audio_url]

Duration: 22:02
Let's dig into the science behind why gardening is good for you. There are nutritional benefits, for sure, of growing your own food. But, what about the non-nutritional benefits? Join Karin as she "geeks out" just a litt…
Ep. 6 - Garden Talk Tuesday: Seed and Plant Selection [not-audio_url] [/not-audio_url]

Duration: 27:25
This episode we talk about plant nomenclature, define different terms surrounding types of seeds and plants, and dig a little bit into starting your own transplants versus purchasing started plants. The MU Extension guid…
Ep. 5 - Experimenting in the Garden [not-audio_url] [/not-audio_url]

Duration: 24:01
How can you do things a little differently in your garden? Today we'll talk about the numerous ways you can experiment with planting dates, varieties, and techniques in the garden once you've got a couple of seasons unde…