You can revive a dying cedar (or arborvitae) if it still has green foliage, but any branches that are completely brown will not grow back. To bring it back, you must address water issues, prune the damage, and optimize the soil.
The prospect of a cedar tree regaining its health largely depends on the severity of the issue and the timely application of appropriate remedies. In many cases, with proper care and intervention, cedar trees can recover.
Cedar trees can be tricky to diagnose, but checking for signs like yellowing or browning needles, branch dieback, and pest infestations can help determine if it's dying or just stressed.
Uncoated, weathered cedar can often be restored to its original color by applying commercial products called cleaners, brighteners or restorers. Although intended primarily for restoring horizontal wood surfaces, they generally work almost as well on vertical surfaces.
It's a normal cycle all cedar trees go through. Here's how it works: around late summer or early fall, cedars and most conifers need to let go of older, interior needles that are no longer doing the tree much good. Those needles turn yellow/brown as the tree phases them out and makes room for new growth from the tips.
One of the most noticeable signs of an overwatered tree is yellowing leaves. While this can also be a symptom of other issues, overwatering often causes leaves to turn yellow and drop prematurely. This is due to the roots being waterlogged and unable to absorb necessary nutrients.
Browning is a common problem with cedars and the most likely cause is ineffective watering. Without adequate water, the foliage will start to brown but too much water can also cause browning particularly when the soil does not drain well causing root rot.
The UV inhibitor will help to block the sun's harmful rays, which are the primary cause of graying in cedar wood. Here are a few popular options for finishing outdoor cedar furniture: Clear Wood Sealer with UV Inhibitors: These sealers penetrate the wood, providing a protective barrier against moisture and UV damage.
Before you resort to sanding your wood siding to remove gray oxidation, cleaning with oxygen bleach and oxalic acid should remove the gray and restore the wood's natural color. Each year you want to give your cedar siding a general cleaning to remove dirt and grime, and brighten your siding.
Pruning cedar trees is crucial for their health. By cutting away dead branches and diseased limbs, you help your tree fight off infections and pests. This makes the tree stronger and more resilient over time. A healthy tree is not only more beautiful but also less likely to suffer during harsh weather conditions.
There are three methods to control or kill cedars: fire, mechanical and chemical. Fire originally controlled cedars. With adequate fuel and under safe prescribed burning conditions, fire will control most cedars less than 6 feet tall.
Cedar is often marketed as “rot-resistant,” which is true—but incomplete. Resistance does not mean immunity. Over time, moisture, heat, and organic exposure can break down even the most durable wood. If you ignore airflow, foundation design, and maintenance, cedar will rot.
If your tree still has healthy leaves or green tissue beneath the bark, there's a good chance it can be saved. However, if more than half the tree is dead or the trunk and root system are compromised, removal may be the safest path forward.
Unfortunately, once a cedar tree has been topped, it is highly unlikely to regain its natural form. The new growth that emerges from the cut areas will be weakly attached and prone to breakage, resulting in an unsightly and potentially hazardous appearance.
The Eastern Red Cedar tree can live up to 800 years in the wild. It is a slow-growing species that typically reaches its mature size within approximately 10–20 years.
Water Stress: Cedars are relatively shallow- rooted trees. They are susceptible to drought stress especially on well-drained, sandy soils. The extreme of very wet soil in the fall and winter, followed by a hot, dry summer, is very stressful for the roots.
Using it for starting your fires is just fine. But burning it exclusively is not recommended. Pockets of these cedar oils will cause pops and spits of fire sparks and embers, making it quite dangerous for use in an open, inside fireplace.
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Unstable Limbs Can Cause Property Damage
Healthy limbs usually don't fall off trees during storms; instead, the weak, dying, or diseased branches do. Leaving diseased limbs on the tree will only make them more vulnerable to falling the next time a storm hits, putting your home at risk.
Applying a Wood Brightener
Wood brighteners are specially formulated products designed to restore the natural color of weathered and faded wood. These brighteners help neutralize the effects of UV rays, mold, mildew, and dirt, making your cedar siding look revitalized.
Mildew and mold thrive in moist, shaded environments, making cedar decks particularly susceptible if they do not receive adequate sunlight and ventilation. These fungi can quickly spread, creating unsightly black spots that mar the wood's natural beauty. Another cause of black spots on deck wood is tannins.
When cedar is exposed to the elements, it gradually turns a silvery gray color. This happens when ultraviolet light from the sun oxidizes with natural oils and acids in the cedar. This weathering process gives cedar an elegant, rustic look that many homeowners love. Others may find the gray to be uneven or blotchy.
Cedar wood doesn't turn gray because it's dying — it's actually protecting itself. When UV rays from the sun hit your cedar fence, they break down lignin (the natural glue holding wood fibers together). This creates a silver-gray layer on the surface that acts like sunscreen for the wood underneath.
Use proper watering methods
Whether it's too much or too little, poor watering practices are often to blame for a sick tree. If rain has been scarce lately, make sure to water the soil around the tree deeply. Also, inspect the area where the tree is planted, ensuring it has enough drainage.
For a safe and effective cleaning solution, consider using a mixture of vinegar and water. This combination not only cleans but also helps prevent mildew growth. Mix equal parts of white vinegar with water in a spray bottle. Lightly apply it to the surface, let it sit for a few minutes, then scrub with a soft brush.