Understanding Dead Spots on Emerald Green Arborvitae: Causes and Solutions

Why Your Arborvitae Has Dead Spots

If you planted emerald green arborvitae last September and now see dead, brittle patches—especially near the bottom—while the tips still show new buds, you’re likely witnessing a combination of normal needle shed and transplant stress.

Normal Seasonal Needle Drop

Arborvitae naturally shed older interior needles as new growth emerges. If the dead foliage is on the inner parts of branches and the branch tips are actively growing, this is simply the plant’s way of renewing itself. The lighter green color you notice is also typical during this transition.

Transplant Shock and Root Development

Because your trees were planted in September, they spent their first season establishing roots rather than producing top growth. This root-focused energy allocation can leave the foliage looking a bit sparse or discolored. The brittle dead spots are often the older needles that the plant sacrifices while it builds a strong root system.

What to Do

• Water during dry spells. Ensure the soil stays evenly moist (not soggy) especially in the first two years.
• Avoid fertilizing now. Let the tree direct its energy to root growth.
• Wait and observe. As long as the branch tips are green and budding, the tree is healthy. The dead inner needles will eventually fall away on their own.

In short, this is likely a temporary phase. With proper moisture and patience, your arborvitae should fill out beautifully.