If your garden isn’t thriving the way you expected, there may be a simple explanation. In this article, we’ll look at 4 common beginner gardening mistakes, and what to do instead so your garden can grow healthier and more productive this season.
How to Avoid Common Gardening Mistakes
Have you ever planted a garden and then found yourself a few weeks later wondering why things weren't going the way you expected? Maybe the leaves are yellowing, the plants just aren't thriving, or you can't figure out if you're watering too much or not enough.
Most of the time, it isn't bad luck or a lack of skill. It usually comes down to a handful of very common mistakes, and the good news is that they're easy to fix once you know what to look for.
Here are the four mistakes I see most often, and what to do instead.
Planting the Whole Seed Packet
Seed packets are inexpensive, easy to store, and full of possibilities. But they can also be a little misleading, because most packets contain far more seeds than a typical home garden actually needs - especially if you're gardening in a small space.
When you plant the whole packet at once, two things tend to happen:
- you end up with more plants than you have space for and/or can care for
- everything matures at the same time
Suddenly you have more lettuce or radishes than you can possibly eat in a week.
A better approach is to plant just a portion of the seeds and save the rest. Most seeds stay viable for several years when stored in a cool, dry place.
Even better, try succession planting: sowing small amounts every few weeks so your harvest is spread out over time instead of arriving all at once. The timing of each successive planting depends on the crop and your growing season, and it's worth doing a little research before you start.
Planting Too Close Together
When seedlings first sprout, they look so small and delicate that the spacing guidelines on the seed packet can seem exaggerated. But those recommendations are based on how large the plant will actually become at maturity.
Crowded plants compete for sunlight, water, and nutrients. Air circulation suffers too, which can invite disease. So even when those transplants look tiny in the garden bed - yes, even the tomatoes - give them the space they need.
Correct spacing is genuinely hard for me. My tomato transplants always look so small, and I'm forever tempted to squeeze one more in. But I've learned over the years that one healthy, well-spaced plant will outperform several crowded ones every time.
Part of proper spacing also means thinning seedlings when necessary. If you end up with seedlings growing too close together, thin them out by pulling the extras, or snip the stems with scissors if they're too tiny to pull without disturbing the others. It feels wasteful, but the plants that remain will be healthier and more productive for it.
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| Thinning overcrowded carrot seedlings. |
Overwatering or Underwatering
Plants need water, but their roots also need oxygen. When soil stays constantly wet, roots can struggle and eventually rot.
Rather than watering on a fixed schedule, check the soil first. Push your finger about an inch into the soil, up to your first knuckle. If it feels moist, wait. If it feels dry, it's time to water.
When you do water, give the plants a good deep drink rather than frequent shallow watering. This encourages roots to grow deeper and makes plants more resilient overall.
If you're growing in containers, keep in mind that they dry out faster than garden beds, especially in summer heat. The finger test still applies, but you'll likely need to water more often.
Not Enough Sunlight
Most vegetables need six to eight hours of direct sunlight per day. But it's easy to place a garden where there happens to be open space, without paying attention to how much sun that area actually gets throughout the day.
Plant height matters too. Taller plants can shade shorter ones if they're not positioned thoughtfully. A simple fix: place taller crops on the north side of your garden so they don't block the sun for everything else.
Even spending a day or two observing how sunlight moves across your yard can make a real difference in where you decide to plant.
Plan First, Plant Second
One of the best things you can do is spend a little time planning your garden before the season really gets going.
Over the years, I’ve learned that many of these common mistakes - overcrowding plants, choosing the wrong location, or planting more than you can manage - happen simply because we didn’t start with a clear plan.
That’s why I created my workbook, the Homegrown Garden Blueprint.
It walks you step by step through planning a successful garden: choosing the best location, deciding what to plant, understanding spacing, and organizing your layout so your plants have the best chance to thrive.
If you’d like a little guidance as you get started this season, you can learn more about the Homegrown Garden Blueprint here.
Gardening is one of those skills we learn by doing, and every season teaches us something new, no matter how long you’ve been at it.
Kathi Rodgers is the gardener and writer behind Oak Hill Homestead (est. 2006) and the host of HOMEGROWN: Your Backyard Garden Podcast. With over 30 years of gardening experience in a variety of climates and soils, she helps new and aspiring gardeners grow healthy, organic food right in their own backyards.
A passionate advocate for simple, self-reliant living, Kathi is the author of multiple ebooks, a published magazine contributor, and shares practical advice with readers who want real-life solutions they can trust.
Kathi lives in Oklahoma, where she grows more cherry tomatoes than she can count and keeps a watchful eye on tornado season. A proud grandma and great-grandma, she believes that wisdom - like a bountiful garden harvest - should be shared.
