To take care of Thuja, you need to regularly water and trim them, but also check if they have been attacked by fungal diseases. One of the most dangerous diseases that threatens Thuja is phytophthora.

There are five extant species of Thuja, all of which are small to large evergreen trees. Two of these species are native to North America, Thuja occidentalis and Thuja plicata, the latter of which ...