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Do you like dead trees? Wish you had several of them in your backyard?
Of course not!
While mulch can be beneficial for your trees, it can balance the soil temperature, retain moisture, and batter yet, it looks good!
But, did you know if you mulch your trees the wrong way…
You could injure or kill them!
Here is EVERYTHING you need to know about mulch volcanos and how to fix them...
The Problem with Volcano Mulching
Here's the deal, "Volcano Mulching" is a No-No!
It's true; nobody wants to kill a tree and keep it in their yard.
But the problem is that many homeowners and "professional" landscapers often mulch the wrong way. And pile mulch up around the base of the tree.
As Penn State puts it: "Mulch Volcanoes are Erupting Everywhere!."
In my experience, this is something I see all too often, and it's a costly mistake. At the same time, problems may not be immediately apparent. But beneath the mulch is a different story.
There are several problems with "volcano" mulching, including:
Retaining moisture against hardened bark which leads to rot,
Promoting fungal growth,
And causing improper root formation.
While you may not see the issues forming above the mulch, problems are developing that will eventually kill your trees under the surface.
Why do so many use the tree volcano method?
No doubt about it, a mulch volcano can appear aesthetically pleasing, which is probably a huge reason people do it.
Further, whether you prefer to buy bags of mulch or buy it in bulk. It's a natural part of mulching if you are unaware of the issue. Think about it when you bring a wheelbarrow full of mulch. Your natural instinct is to put it right up against the tree trunk.
As a result, when you spread it, if you don't know any better, you leave a pile of mulch against the tree.
Mulching Trees the Proper Way
Fortunately, mulching the proper way is simple.
Simply spread 2-3 inches of mulch evenly around the tree, and leave a few inches around the tree's trunk so the flare root can remain exposed. Ensuring that no mulch is touching the trunk itself. Ideally, you want to mulch out to the drip line of a tree.
A thinner layer of mulch over a broader area is much better than a mulch volcano for the health and longevity of the tree.
This allows the tree to "breathe"; rather, it allows the moisture to escape, preventing the growth of fungus and minimizing rot and decay.
Better yet, the tree will still benefit from the mulch application.
Pro Tip! If there is too much mulch to add more, but you still want the look of fresh mulch, simply rake away the excess mulch before reapplying a new layer.
Can I fix an over-mulched tree?
Unfortunately, if your trees are already damaged by mulch volcanoes, there may not be much you can do.
This depends on how long the mulch has been piled up against the tree's bark. If it's only been a season or two, you will likely be ok.
On the other hand, if it's been more than three years that mulch has been piled against the trunk. There may already be too much damage to repair.
Either way, here is how you can address an over-mulched tree:
Steps to repair an over-mulched tree
Step One: Remove the mulch until you expose the flare of the tree. Be careful not to damage the bark of the tree.
Step Two: Once you have exposed the flare, you will likely find roots growing in the mulch. Use a set of pruning shears and remove those roots carefully.
Suppose it's gotten to a point where an above-ground root ball has formed. You will want to leave the root ball alone.
Creating the Raised "Volcano Like" Appearance the Right Way
You can use two methods to create a raised appearance without damaging your trees. These methods work best when you plan your landscape out ahead of time, before planting the tree.
And if you are looking for some great ideas on what trees to add to your garden, check out the best trees for small gardens.
Method One: Create a small mound of dirt when you plant the tree. So that when you put the tree in, it will naturally sit a few inches higher.
Method Two: Edge the border of your mulch ring with a small trench. While it won't make a huge difference as far as height goes, a clean edge will still give off the appearance that the tree is raised more than it is.
Mulching At the End of the Day
Whatever type of mulch you decide to use, mulching the proper way can help your trees thrive!
While volcano mulching looks aesthetically pleasing, it is terrible for the health and longevity of your trees. So avoid "Volcano Mulching" around trees. Proper mulching involves spreading 2-3 inches of mulch evenly around the tree, leaving space around the trunk.
And when that tree dies, it may become a risk to your home if it's big enough. Either way, losing a tree can lower your home's value. It can take away from the ecosystem and cause trees as well. Which most of us can agree is undesirable.
