My 7 Worst Gardening Mistakes and What I Learned From Them

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This time of year is when my garden has been active for months, and my worst gardening mistakes become evident. Every year I tell myself, “I’m going to do THIS next year, and things will turn out better!” And they usually do, though I reliably manage to make some utterly different mistake the next time around. I thought it might be helpful for beginning gardeners (and possibly entertaining for experienced gardeners) to compile some of the biggest mistakes I’ve made over the years.

Mistake #1: Not Doing the Research

My first gardens were in the Chicago suburbs. I never made any big mistakes there because it’s really easy to grow things. My first big gardening mistakes came in Houston, where it’s pretty easy to grow things too. If you don’t start off making assumptions. I made a lot of assumptions.

It didn’t occur to me to read the seed packets or Gulf Coast-specific gardening books during my first year of gardening in Houston. I just did exactly what I’d done in Chicago.

My First Year of Gardening Yielded Exactly Four Tomatoes.

I started reading up on tomatoes and did a little better the following year, though my cucumbers tasted awful. Like the tomatoes I’d planted too late, and the hot weather made them almost inedible. I can’t emphasize enough the importance of reading up on plants and knowing your growing zone. Especially if you’ve moved cross-country or are gardening for the first time. Timing and varieties are so different from place to place.

Gardening is challenging for anyone, anywhere. Sometimes you have to make changes and adjust. Dennis revamped his entire garden and got great results. Read more about that here.

Mistake #2: Assuming the Critters Won’t Get In

Another mistake I made in Houston was assuming that property boundaries were inviolate. We had a nice privacy fence and no pets, so I didn’t plan for any kind of animal protection other than bird netting. I was pretty disappointed when neighborhood cats started using my garden as a litter box. Aside from the disgust factor, cat poop is also dangerous for pregnant women to handle due to some diseases they spread. And this was right in the middle of my childbearing years. 

We got some plastic sheeting from Home Depot and wrapped it around posts at the corners of the garden. It was only about two feet high, so it was still easy for me to step over. But, the cats must have disliked the smell because that stopped them.

Daisy knows all about the critters getting in and eating your garden! She shares that and others stories in this article.

Mistake #3: Too Much of a Good Thing

I got the hang of gardening in Houston just in time to move to a totally different climate, the High Plains in Colorado. When I got my property here, I did the right thing in getting my soil tested the first year. I found the soil is very alkaline and low in organic matter. I started adding whatever organic matter I could to the soil. 

When I started keeping chickens, I dumped soiled bedding from the coops into the garden and noticed improvements. I kept doing this for a few years. In 2017, I got three goats, and in 2019 two alpacas and two lambs. I kept dumping soiled bedding onto the garden, not paying attention to recommended composting times.  

That Was a Big Gardening Mistake

I got no potatoes or rutabagas in 2019, and my corn yield was lower than it should have been in 2020 because my plants got a blight disease caused by too much nitrogen.  

I did some research, and my garden is on the mend. However, it may be a few years before I can grow potatoes in that one particular part of my garden, as they seem to be most sensitive. I added no fertilizer whatsoever this year. I also planted pumpkins and squash in the most over-fertilized part of the garden because they are known to soak up excess nitrogen without succumbing to disease.  

I greatly expanded my compost area. Now, I dump all the soiled bedding into that to allow it time to break down before I put it in the garden. When I only had chickens, the garden could digest the small amount of manure. My chickens spend most of the time outside, so a lot of the chicken manure ended up in the pastures. However, the addition of manure from the four-footed animals was too much, and I needed to adjust. I am now far more conscientious about composting times.

Speaking of chickens, you can read about adventures with raising them and what worked the best for me and my chickens, here.  

Mistake #4: Watering With a Hose Works, Until it Doesn’t

Another big mistake I made during my first few years in Colorado had to do with irrigation. I’d gotten away with using a hose to water in Chicago and Houston. I rarely needed to water at all in Chicago. I needed to water sometimes in Houston. We lived there during a significant drought in 2011. We didn’t water the lawn, but we watered the vegetables, and I always just used a hose. 

Central Colorado was different. It is so windy, I would spray things with a hose only to have most of the water blow away. I spent so much time watering the first couple of years. If I wanted something to sprout, sometimes watering two or three times a day was necessary.

It Seemed as if Everything Dried Out Within Minutes

Eventually, I installed drip lines, and what a difference they made. It took me longer than it should have to install the drip lines. I read about them, but the setup looked complicated. I lacked the confidence to jump in and figure it out. I think drip lines are more work than usually advertised. A great deal of my time is spent monitoring and fixing leaks. But the fact that water does not get blown into the air is invaluable in my dry, windy part of the country.    

My inefficient watering was because I did not adapt to the change in climate between Houston and Colorado enough. I developed a particular way of doing things in Houston that did not work in Colorado. It has taken me years to work out all the kinks. I still water most days, but it’s much less work. I never water more than once a day, and things sprout up just fine.  

Even though a great deal of the Western United States is suffering from drought, your garden doesn’t have to suffer. Read this article on how to make sure your plants get the water they need.

Mistake #5: Inappropriate Mulching

In Houston, we kept everything mulched all year. I had two big gorgeous pine trees in my front yard that provided us with plentiful mulch in the form of pine needles. It looked great, saved water, and minimized both weed and insect problems. I started off mulching everything in Colorado, but noticed my plants were taking forever to sprout.

After some research and thought, I realized that the mulch prevented the soil from warming up in the springtime. So now, I plant my peas and potatoes and then wait until they’ve sprouted before adding mulch. Unless we’re expecting a freeze, in which case I add a lot of mulch to protect the seeds. 

Gardening involves a lot of flying by the seat of your pants.  

Mistake #6: Forgoing Trellising

I’ve done so well on peas the last few years I figured I would plant more than usual this year and freeze them. The peas always seemed to be fine without trellising, so I never bothered. We got a lot of peas this year, but I will absolutely trellis next time. 

First of all, without trellising, harvesting was a mess. I had to spend so much time digging through masses of plants. Second of all, trellising keeps the plants healthier. We had more rain than usual this year, and some of the plants started getting a little mildew on the bottom. That never happened before in Colorado, but trellising would have prevented that.  

Mistake #7: Forgetting How Quickly Weeds Grow

In general, I’ve been super grateful for the moisture this year. My pastures are still somewhat green, which is unusual in July. But it has had some unpredicted effects. I went on a trip for the first two weeks of June. I had some personal things I needed to take care of, which was fine. However, I missed my hoeing window and have been paying for it ever since.  

For sizeable gardens, hoeing is an excellent, cheap, organic method of controlling weeds. But it really only works when the weeds are small. You can’t pull out some beast with roots six inches deep using a hoe. Unfortunately, that is what I returned to when I got home. I had been working on hand-pulling until I injured my hands. (It just never ends.)

Gardening is a Journey, and You Can Always Make Improvements

Sometimes you just have to surrender and let the plants do the best they can on their own. I think they will be okay, provided we don’t get clobbered by another hailstorm. Some years are better than others, but we get something every year. 

What changes have you made? Has anyone else had to rethink their gardening styles after cross country moves? What will you do next year to make your garden better?

About Joanna

Joanna has been homeschooling three children since 2012. In 2014, she moved to the High Plains of Colorado. She and her children began a little homestead, gardening and raising chickens for eggs and meat. One animal led to another, and these days they have livestock guardian dogs, chickens, geese, ducks, alpacas, goats, pigs, and one very spoiled cat.

Picture of Joanna Miller

Joanna Miller

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  • What a great post! There’s always something, isn’t there? I too could write on my gardening mistakes and it would be a totally different list from yours. All we can do is garden and learn, right?

    • Definitely. Every part of this Nation is different. It isn’t even just what zone you’re in. Altitude, rain patterns, snow or no snow. Alkaline, acid, neutral, to be tested for. Length of growing season. Sun intensity. There are so many variables.

      • Amen!! I started gardening thinking in terms of hot and cold, wet and dry. There is so much more. Keeps things interesting!

  • I have moved from Memphis to Atlanta to Washington state and now to NE Florida. I had successful gardens in all but like the authors experience, I made almost all of those same mistakes.

    I had more problems (mildew, fruit rot, insects, low yield) this year than ever. I’ll bet many of mine came from too much nitrogen. Also I was overconfident.

    I’m planning now for the fall crop but will have to work and study first.

    • My garden last year was a refresher course in college plant pathology, largely due to the weather. It was rainy and cool the entire growing season. If I hadn’t purchased my CSA my freezer would have been bare! But I learned from the experiences. I also did too much nitrogen in a potato bed one year. I had lovely plants. No potatoes. Garden and learn!

  • I only moved from the east side of our valley to the west side. The difference in gardening issues caught me off guard and surprised me! East side, more water available, better soil. West side, drier with poor soil. I’ve had to struggle to grow most things. After losing three peach trees, I’ve given up and settled on apricots, which may or may not make it through the last frost. This year I was rewarded with a bumper crop!

  • High mountain desert here. Intense sun because of the altitude. Fairly neutral soil. An almost constant breeze because of being low but on the side of a mountain. Morning and afternoon thermals.

    I water with soaker hoses. No sprinklers and no hose with a sprayer either. Just fruit trees are water with a hose, laid in the basin to hold the water.

    This year I’m working to make it easier on me. I’m cutting up an old heavy duty hose with some worn spots making short linked hoses with inline or y connections with faucets to control where gets watered but no hoses to pull once in is all completed. Mostly done in the main garden area. Now starting to do the scattered fruit trees and grape arbor, and vine berries. I can now set the water on a medium flow and let large areas get watered slow and deep. Or if some one area needs more a often watering I can close off the other areas and let that one specific area get watered. At 74 with several injuries within the last 4 years pulling 200 feet of hoses is just too much.

    I plant with a light scattering of rabbit dropping later watering with a banana skin tea which provides potassium to promote fruiting. Leafy greens don’t need the tea. Just things like peppers, and tomatoes or peas that are producing a fruit. The nightshade also need calcium so I put egg shells in the bottom of the planting holes. This year I found some old nests my free ranging chickens had filled a n d not sat on. I burried whole old eggs in the hoIes breaking them before a light covering of dirt then setting in the started plants. Plants are just begining to set fruit now. It looks like a bumper crop getting started. I plant multiple varieties of tomatoes and peppers. Every year the weather is a bit different and different ones do better in different years. I plan on enough for canning with close to 60 tomato plants alone. Root vegetables do well with 2 planting per year. I grow native dent corns and dwarf sweet corn. They have to be far enough apart to not cross pollinate if possible as I save all heirloom seeds from the garden. Some years igrow 65 day sweet corn in two plantings 6 weeks apart. Usually both do ok. Som we years all or part of the first planting will catch an unusually late frost. If they are still small the frost kilIs them . On the reservation the dent corn is planted April 1 and 15. Trying to make sure of time for a crop to mature before fall freezes.

    I grew up gardening in Southern and Central California. Desert but low altitude. Different soil also. Moving here 44 yearsago created a learning curve. I’ve always composted. That’s about all that hasn’t changed.

  • I mulch as much as I can with whats available on a desert place. No lawn clippings, or lots of leaves. I have one big cottonwood tree and some elms. So some leaves but not a lot. Instead a good portion of the garden is planted in wooden pallets laying on the ground. It helps hold in water, shields tiny seedlings from wind, and works much like the old native style of desert planting in waffle beds. I do check that the pallets are not chemical treated. Learn the stamped in codes for that. I forget so I keep that kind of information in a notebook for my garden.

    When I pull weeds they can go in and my of three places. Critters will eat some, some I don’t want laying around in the garden and some will be laid back on the ground to decompose where they were we growing. That replaces what they were taking from the soil and acts as Mulch to hold in moisture. Actually there is a 4th use. Many things I pull out of the garden are wild edibles that get served for dinner that same day. By July I Start letting the wild Amaranth grow instead of pulling it. In the garden “pig weed” is our wild amaranth and will grow more than 5 feet tall in the rich watered garden setting. Seed head on the main stalk will be 6 to 8 inches long and up to 3 inches across. Every branch will have another seed head about half that big. We eat and can all we want them save seed in the Fall. I usually save about half a gallon of tiny seeds. Then they are added to the seeds for winter sprouts and microgreens. They are self seeding but don’t come up until June of July so many earlier crops are finishing up. Some that like shade will still grow along with this wild amaranth. Lettuce, radishes, Swiss chard, boc choy are examples of what I can plant with the amaranth. Out in uncared for soil that amara n th ony gets 18 inches tall at the most with leaves the size of a tablespoon. In the garden leaves are as wide as my medium size gloves and longer than my gloves.

    I expanded the garden by about three times the space. This winter I’ll cover the new area with cardboard or sheet plastic to kill the rest of the grass. Its too hard for me to pull this grass. It spreads by runners. I wont allow it to spread but it has to go. The garden I’ve planted there is doing great.

    • Amaranth is excellent animal feed, too. That’s one weed I don’t mind too much either. I’ve never tried eating it myself but my chickens and pigs love it, and it’s quite nutritious.

  • Our biggest gardening mistake was not enough room between pumpkins, watermelon and cucumbers. Didn’t know they’d cross pollinate.

    We have blight and it ruin most of the last crop of tomatoes we grew. Back to raised beds and peat / vermiculite / compost soil mixture when I have the time.

    I bought a small cement mixer for $50 last year and will use it to mix the soil mixture.

    No garden here this year but I help my friend with his and that’s my bug out location.

  • In my book, you can’t beat N. IL area for growing. Some soil is definitely better in some areas than others but soil you can address.
    Unfortunately, grass (of all varieties) also grows well. The biggest battle I have in my garden – partly due to the spouse’s “experiment” a couple years back. Nothing insurmountable – just aggravating due to its origins.
    This year some critter decided the zuke plants were quite tasty. Didn’t touch the summer squash or cukes. That’s a first and hopefully the last. Zukes are usually not in short supply (read: cheap to buy or others have plenty to “re-home”).

  • Loved your article! My first gardening mistake was planting a garden. I had the horrible “black thumb” disease and killed everything in sight. After several years of trying to garden (and depending upon my county extension agent a lot), I have made progress and my thumbs are getting close to green. Just keep trying and do your research…you will get there.

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