ᐅ Arborvitae are gradually dying off.

We planted a thuja hedge last September. Until now, it looked really healthy. However, more and more plants are turning brown over time. The brown plants are very easy to pull out. It seems like the roots haven’t taken hold at all. What could be the reason for this? Especially since the plants were previously quite green and had grown well.

Maybe not watered enough? 5

No roots mean insufficient watering, and I don’t mean watering during hot weather. For example, my gardener said that lawns should be watered in spring when the temperatures are mild because the grass develops roots then, which helps it withstand summer better.

Not watering during heat is not better either. And the spring was anything but dry…

So far, one out of 40 arborvitae has died for us. It just slowly turned brown. Planted last fall as well. All the others still look great. Hopefully, we won’t lose any more.

opalau schrieb:

Not watering during heat is also not better. And the spring was anything but dry…

So far, out of 40 thuja trees, only one has died. It simply turned brown gradually. It was also planted last autumn. All the others still look great. I hope we don’t lose any more.

You misunderstood me, and I didn’t explain well. During heat, you have to water every day, and in spring as well, so even before April.

White growth under the bark? Check for the fungus Armillaria mellea. You can look it up online.