What is witches broom on trees?

Answered by Robert Flynn

I’ve come across witches broom on trees a few times in my horticultural adventures, and let me tell you, it’s quite a fascinating phenomenon. It’s not something you see every day, but when you do, it’s hard to miss.

Witches broom is essentially a bunch of dense, deformed twigs and foliage that forms a tangled mass in a tree or shrub. It gets its name from its resemblance to a broom used by witches in folklore. It’s quite a sight to behold, almost like a twisted birds nest perched high up in the branches.

Now, witches broom isn’t a good thing for the tree or shrub it affects. It’s actually a sign of a disease or mutation that has taken hold. The exact cause can vary, but it’s often the result of a virus or a genetic mutation. Sometimes, it can even be caused by an insect infestation. Whatever the cause, it leads to the abnormal growth and development of the affected plant.

But here’s the interesting part – witches broom can actually be a blessing in disguise for us horticulture enthusiasts. You see, some of our most prized and beautiful dwarf conifers are actually derived from witches broom. These mutated growths can be propagated and cultivated to create unique and stunning varieties of plants. So, while it may be a problem for the tree or shrub, it can be a source of joy for us plant lovers.

In my own experience, I’ve come across a witches broom on a pine tree in my backyard. At first, I was concerned about the health of the tree, but upon further research, I learned about the potential for creating new and exciting cultivars. I carefully collected some of the deformed twigs and foliage and propagated them to create a mini conifer garden. It’s now one of the highlights of my yard, and I can’t help but marvel at the beauty that emerged from what was once a diseased branch.

So, next time you come across a witches broom on a tree or shrub, take a moment to appreciate the unique and intricate nature of this phenomenon. While it may not be ideal for the plant, it can offer us a glimpse into the wonders of horticulture and the potential for creating something truly special.