Last updated: August 18, 2026
We love a good DIY weekend. Half the fun of owning a home is doing stuff to it yourself, and plenty of yard projects are exactly the kind of satisfying work you should absolutely tackle on a Saturday. This is not that list. This is the other list, the one we build from experience: the projects that start with a rented tool and a lot of confidence and end, a few weeks or a couple of seasons later, with a phone call that starts “so, I tried to do this myself, and…” We are not judging. We have literally built a business on the callback. But if we can save you the money and the weekend, here are the five DIY landscaping jobs that go sideways the most, and exactly why they do it.
Table of Contents
- 1. The retaining wall that starts leaning
- 2. The paver patio that sinks
- 3. The drainage “fix” that moves the problem
- 4. The plants that were doomed from the hole
- 5. The mulch volcano
- When DIY is the right call
- Frequently asked questions
1. The retaining wall that starts leaning
The retaining wall is the number one callback, and it is almost always the same story. It looked easy. Stack the blocks, they interlock, done by lunch. What the video did not show is that a retaining wall is not a stack of blocks. It is an engineering job holding back tons of soil and water pressure, and the part that makes it work is entirely invisible: the compacted gravel base, the buried first course, the backfill drainage, and on anything of real height, the reinforcement behind the wall.
Skip any of that, which the DIY version almost always does, and the wall works fine right up until the first big rain saturates the soil behind it. Then the water pressure has nowhere to go, the wall starts to bow, and a leaning retaining wall does not un-lean itself. It gets worse until it fails, and now the fix is tearing out the whole thing and rebuilding it right, which costs more than doing it right the first time. Retaining walls and hardscaping are the definition of a job where the shortcut is invisible on day one and catastrophic by year two.
2. The paver patio that sinks
Close cousin to the wall, same root cause: it is all about the base you cannot see. A paver patio done right is four to six inches of properly compacted gravel base, a bed of leveling sand, careful screeding, and tight joints locked with polymeric sand. A paver patio done fast is pavers laid on whatever dirt was already there.
Both look identical the day they are finished. That is the trap. The difference shows up over the first winter, when Illinois does what Illinois does and freeze-thaw cycles heave the ground under an improperly based patio. By spring you have got pavers at five different heights, a low spot that collects water, weeds coming up through joints that were never locked, and a trip hazard where you wanted a patio. Fixing it means pulling it all up and redoing the base, so the “savings” evaporate. If you have already got a patio that is starting to go, paver maintenance and releveling can sometimes rescue it before a full rebuild is the only option.
3. The drainage “fix” that moves the problem
This one is sneaky, because the DIY version often looks like it worked. You have got a wet spot, so you dig a trench, throw in some pipe, and route the water away. The soggy spot dries up. Victory.
Then you notice the water went somewhere, and that somewhere is your neighbor’s yard, or worse, back against your own foundation at a different corner. Drainage is not just “make the water leave here.” It is understanding where all the water on the property actually wants to go, and grading and routing the whole system so it ends up somewhere it is supposed to be, not just out of the one spot you were staring at. Get the slope wrong by a little and water pools in the pipe. Route it wrong and you have turned one wet spot into a feud with the neighbor and possibly a foundation problem. Real drainage work looks at the whole yard, because water does not care about the one square of it you were focused on.
4. The plants that were doomed from the hole
Planting seems like the most beginner-friendly job on earth, and putting a plant in the ground is easy. Putting the right plant in the right spot, in a properly prepared hole, so it actually lives and looks good in three years, is the part that goes wrong. The classic DIY planting fails: the sun-loving plant stuck in a shady corner, the shade plant baking in full sun, the shrub that gets huge planted eighteen inches from the house, the tree planted too deep so it slowly strangles itself, and the whole bed arranged with no thought to how big everything gets.
None of that shows the day you plant it, when everything is small and green and hopeful. It shows over the following seasons, as the wrong-spot plants struggle and the too-close ones swallow the walkway. We wrote a whole piece on the most common landscaping mistakes, and bad plant placement is near the top of it every time. Plantings done with a plan account for light, soil, mature size, and how the bed reads as it fills in, which is the difference between a garden and a green regret.
5. The mulch volcano
We had to include it, because it is the most common landscaping mistake in America and it is entirely self-inflicted. Somewhere along the way people decided that mulch piled in a tall cone against a tree trunk looks finished. It does not. It slowly kills the tree.
Bark above the root flare is not meant to sit against constant wet mulch. Pile it up against the trunk and you keep the bark soaked, which invites rot, disease, and insects, and the tree can start rooting up into the mulch instead of down into the soil. The tree looks fine for a few years and then mysteriously declines, and nobody connects it to the mulch mountain around its ankles. Mulch should be a flat two-to-three-inch ring, pulled back so you can see the root flare, never a volcano. It is the easiest fix on this whole list and the most ignored. Doing mulch installation at the right depth, away from the trunks, is one of those small things that quietly keeps a whole landscape healthy.
When DIY is the right call
To be fair, because we mean it: plenty of yard work is great DIY. Mowing, weeding, planting a few annuals in a bed that is already good, spreading a bag of mulch at the right depth, basic seasonal cleanup, watering, edging. If the job is low-stakes and a mistake just means redoing a small thing, have at it. It is genuinely satisfying and it saves money.
The pattern for what to hand off is simple: the jobs where a mistake is expensive, structural, or invisible until it fails. Anything holding back soil or water. Anything whose success depends on a base you bury. Anything where getting the slope or the plant choice wrong means tearing it out and starting over. Those are the callbacks, and they cost more as a redo than they ever would have as a done-right job. Knowing which is which is most of being smart about your yard. Browse our galleries if you want to see what the done-right version looks like.
Frequently asked questions
What landscaping projects should I not do myself?
The projects worth handing to a pro are the ones where a mistake is expensive, structural, or hidden until it fails: retaining walls, paver patios, drainage and grading, and landscape design or major plantings. All of these depend on work you cannot see once it is finished, like a compacted base or correct slope, so a shortcut looks fine on day one and becomes a costly redo by year two. Simple, low-stakes jobs like mowing, weeding, and planting a few annuals are great DIY.
Why do DIY retaining walls fail?
Because a retaining wall is not just a stack of blocks, it is a structure holding back tons of soil and water pressure, and the parts that make it work are invisible: a compacted gravel base, a buried first course, backfill drainage, and reinforcement on taller walls. DIY builds usually skip some of that, so the wall holds until the first heavy rain saturates the soil behind it. With nowhere for the water pressure to go, the wall starts to bow and lean, and it only gets worse until it has to be torn out and rebuilt.
Why does a paver patio sink or become uneven?
Almost always because of an inadequate base. A patio built right sits on four to six inches of compacted gravel and a leveling sand bed with joints locked by polymeric sand. A patio laid straight on existing dirt looks identical at first, but Illinois freeze-thaw cycles heave the ground underneath it over the first winter. By spring the pavers are at different heights with low spots that collect water and weeds growing through the joints. Fixing it means pulling it up and redoing the base.
Can I fix a drainage problem in my yard myself?
Sometimes, but it is easy to just move the problem instead of solving it. Drainage is not only about draining the one wet spot you can see, it is about understanding where all the water on the property wants to go and grading and routing the whole system so it ends up somewhere appropriate. A DIY trench often dries the visible spot while sending water into a neighbor’s yard or back against your foundation elsewhere. Getting the slope or routing wrong can make things worse than the original puddle.
Is it bad to pile mulch against a tree trunk?
Yes. A cone of mulch piled against a trunk, the so-called mulch volcano, keeps the bark constantly wet, which invites rot, disease, and insects and can cause the tree to root up into the mulch instead of down into the soil. The tree often looks fine for a few years before it declines, and the mulch is rarely blamed. Mulch should be a flat two-to-three-inch ring pulled back from the trunk so the root flare is visible, never mounded against the bark.
Already got a callback on your hands?
If you are looking at a leaning wall, a sinking patio, a wet yard, or a bed that did not go the way you hoped, no judgment here, we fix these every week. BLC Yardworks handles hardscaping, drainage, plantings, and mulch across the area, and we would rather build it right than watch you redo it twice. Reach out for a free estimate and let us take it from here.
About the publisher
BLC Yardworks is a local, family-run landscaping crew handling lawn maintenance, drainage, hardscaping, plantings, lighting, pergolas, seasonal cleanups, mulch, and snow removal. See all services, browse the project galleries, or get a free estimate.