Generally the hedges are wide and too high, they overflow in the neighbors and in your inner yard. This is often because the pruning has not been done annually.
The small yellow and/or orange tips at the end of the branches are not an important problem because it is very often a branch tip that froze last winter, it can also be a problem with the quality of the soil (if there is a lot of yellowing) or too much or not enough water.
Some diseases are sometimes encountered in a cedar hedge; the leafminer and the Phomomsis which is particularly fond of cold and wet weather and the symptoms are more visible in the spring. Increase the density of fertilizer.
There are also small spiders that like cedar hedges that are not very "healthy". You can give granular fertilizer or compost to strengthen your hedge or ask a garden center what is the recommended environmental product for the type of problem. Bring in a piece of branch so that the problem can be clearly identified.
Sometimes branches turn yellow. You can simply cut off the branch and wait for new growth. Remember that cedars renew their foliage annually and that up to 20 to 30 percent of the shoots die (so to speak) to make room for new growth. This is part of the natural life cycle of cedars.
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