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Spring Cleaning Feels Good

There is something about spring that motivates me. Things are warming up, color is returning, and the hibernation sluggishness begins to wane. The increasing energy makes me look around and take notice of all of the things that accumulate and fill various nooks and crannies around the house, garage and yard. Piles of unread magazines, paperwork and mail need to be dealt with; unnecessary boxes clutter up the garage; faulty Christmas decorations and a broken bird feeder need to be repaired or thrown out; and fallen branches and litter caught in the bushes need to be cleaned up. Sure, it takes some effort, but it sure feels good to eliminate them from my to-do list, and things just shine and sparkle a bit more!
 
Trees, too, require a spring cleaning. They naturally accumulate clutter from years of growth and hardship. Insects attack, weaken and kill branches. Fungal diseases kill some limbs and internal decay fungi weaken many more, leaving them vulnerable. Storms cause some branches to split or crack, providing even more opportunities for fungi and insects. Growth within the tree is often crowded or misdirected, causing weakness and vulnerability. Too much shade from nearby canopies causes branches to die. Dead branches attract insects, and the resulting decay will spread fungi deeper into the tree.
 
Our Certified Arborists expertly employ the ANSI A300 pruning standard for this kind of clean up. It is called Crown Cleaning and is aptly named. We recognize and clean out the branches that have various fungal canker diseases starting, while we watch for and remove damaging insects. Understanding tree structure and biology enables us to make good decisions about which branches detract from structure or health. Storm damage is detected and removed. Intensity of pruning corresponds with specifications for each tree, based on the dimensions and health of each branch.
 
Trees improve so much from the cleaning! Pruning diseased, damaged or inferior branches leaves the tree healthier, safer, and more beautiful. Stress is reduced, and value and appearance are enhanced. Future growth is off to a better start and tree energy is reallocated to optimum growth and defense. Your tree can now yield all the benefits of shade and property enhancement for years to come.
 
Spring-cleaning is a necessary ritual that uplifts our spirits and improves our environment. It is a good time to assess our trees and get out the clutter that bogs them down. Our properties can then shine with pride!

Evergreen Disorder: Needlecasts

Conifers continue to stay in the news. Spruce had been the most noticeably affected by drought stress and disease agents up to now, but recently both Pines and Spruces are showing browning needles that affect their beauty and health. The culprit is a group of fungi collectively known as needlecasts.
 
This browning can develop slowly, over several years, or very rapidly, as has been the case this spring. These fungi attack the needles as they are emerging. Their spores are in the air in spring and land on the soft needles. If the needles are moistened often enough from rains or heavy dews, the spores are able to germinate and then attack the vulnerable tissue. In years when the frequency of moistening events is greater, there is more and faster browning from needlecasts. Drier springs reduce the amount of browning from needlecasts.
 
 This spring has provided several rain events. Many Pines and Spruce have rapidly browned as a result, and many more will show progressive browning over the course of ‘08. Their weakened state from previous years of drought stress has lowered their resistance to fungal attack and spread, further speeding the browning. Individual trees vary in their ability to resist disease, (as we do as well); therefore, the amount of browning will vary from tree to tree of the same species. Site conditions that favor fungal development such as shade, crowding, reduced air movement, etc., will have an effect also.
 
Infected needles show spotting or banding of discoloration, but then begin to brown, usually at the tip at first, but eventually spreading along the needle. When the needle dies, it is shed (“cast” off the tree). In Austrian and other Pines, the fungus is usually Dothistroma. In Spruces, the needlecast is usually Rhizosphaera.
 
Needlecasts are controlled through protective fungicide spray programs. Timing and materials can vary with the species of needlecast. In the case of evergreens, patience is needed for both control and the return of aesthetics. Spraying protects the new growth that comes on in spring. Since evergreens carry at least 5 years of needles, when these become infected, it takes at least 3 consecutive years of the spray program to collect 3 years of protected and retained needles to have beauty return.
 
Many evergreens are needlessly removed by saddened homeowners or ignorant tree cutters who don’t realize that they can be saved. Don’t let this happen to you! Call your Wachtel Certified Arborist for the accurate diagnosis. Also, share this newsletter with your neighbors who may be thinking of cutting down their evergreens. Especially where these are providing needed screening between yards or obstructing unwanted views, this could be tragic.

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