Can I prune a weeping Katsura? (Cercidiphyllum Pendula) - Knowledgebase Question

Kent, WA
Avatar for bernie24
Question by bernie24
October 22, 2006
We have a Weeping Katsura in our front yard, approx. 10 years old. Some of the branches are now so long they are creeping along the ground and over the tops of other plants. Is it ok to prune this type of tree? If so, when and how? We don't want to lose the beauty of it's weeping form. Thank you for any suggestions.

Answer from NGA
October 22, 2006
Katsura trees should be pruned in late winter or early spring, just as new growth begins. Branches that weep all the way to the ground can be attractive, but they can also make it next to impossible to grow grass beneath it. And, even if the grass does grow, getting the mower underneath the branches can be a royal pain, often leading to broken tree limbs. What's more, if the leaves remain in contact with the grass, especially if the grass is wet with dew, the leaves may be more susceptible to fungal diseases. I suggest removing those branches, or at least shortening them. If you look carefully at your katsura, you'll see where the graft was made (look for a swelling at the top of the trunk, where the branches are attached). You want to preserve the graft and most of the branches, but you can safely reduce the length of the branches, expecting that where you cut, you'll get one or two new branches, which will make the canopy of the tree much thicker. I'd avoid pruning all the branches evenly - you'll end up with an umbrella like top. Instead, alternate the length of each of the weeping branches.

Best wishes with your landscape!

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