Mulching: the benefits of wood chips and leaves

woodchips and leaves 2I often hear about how messy trees are.  In the sense of clean up, this is true.  However, the role they play in filtering our air, providing shade and buffers to sound and adding financial value to our homes, far out weighs the chore of raking leaves in the fall.

I would like to take a moment to sing my praises about wood chips and leaves!   There are a number of reasons both are valuable and can be used in the landscape.  Chips can be used for pathways, around trees, shrubs and vines and other plantings and in compost piles.  They serve in regulating temperature when surrounding woody plants, provide a slow release of nutrients and keep soil more moist, aiding in nutrient uptake.  Not to mention, keeping mowers and weed eaters further away.

Leaves are also very valuable in compost piles, and when placed around trees they put nutrients back into the soil as happens in the forest.  If you don’t like the look of leaf piles around your plants year round, try doing it during the cooler months of fall and winter when you likely spend less time in your yard.  I have one client who puts them around her plants in the fall then takes them away in the spring; resulting in an easy and inexpensive way to fertilize her plants.  If you just don’t want leaves, another option is to put them up for free on Craigslist Freecycle, etc. This saves the time and money it takes to load and drop them off at the dump.

The simple message I am trying to convey is that chips and leaves are useful in keeping our plants and yards healthy and aesthetically attractive.   And that it is less expensive to have them utilized than take them away yourself.  Make them a resource, not a nuisance!

Cabling Benefits and Effects

I want to take a moment to talk about cabling in trees.  A few months back I was inspecting a Cobra cable in a Tulip Poplar (Liriodendron tulipifera) at Panorama City in Lacey, WA. The cable had been installed 6-8 yrs previous by 2 qualified and competent arborists I can personally attest for. Although the cable had been installed properly, it had been completely consumed by new tree tissue in one area and partially in another. This girdling effect unfortunately counters the initial goal of making the tree safer and can interfere with nutrient transport and limb/trunk stability . Luckily this one looks like it will adjust with follow up maintenance pruning and hopefully the tree will grow around and adjust to having the small portion of material inside the two trunks.  In this case the grounds
management changed and the follow up inspection was lost in the shuffle.

This potential issue is something that needs to be addressed. If an arborist is going to install a cable, then it needs to be inspected within 2 yrs. Cobra recommends doing it in 2-4. A lot of things change and are forgotten in 4 yrs., let alone 2. I recommend 2. It is truly the responsibility of the arborist to do the follow up. Ideally there is a contract signed by both parties agreeing to do the follow up inspection, at least from the ground and potentially by climbing.

If the cabling is done properly and If the tree is inspected regularly, it is a potential asset. If adjusting to the cable is needed and neglected, the system is an expensive extra cost and doesn’t do what it is designed to do. It should allow restricted movement; but not too restricted, which happens when the cables are not adjusted when needed. (Unless it is a static cabling application, where trunk/branch movement is not the goal)

In short, cabling is a useful tree care application when installed right and inspected regularly. Have a written contract and jot it down on the calendar so it can properly serve its purpose!