Leaves on Korean aspen trees have a broadly rounded base and a thin, pointed.

For your other trees like apple, maple, aspen, and pears where the leaves have brown spots on the leaves and they are dropping leaves, that is typically a sign of a fungal infection of the leaves.

These infections are usually harmless in a once in a while type of way, but if they happen bad enough in successive years, they can start affecting Estimated Reading Time: 2 mins. Jan 24, With its golden leaves fluttering at the slightest touch of the wind, earning the moniker “quaking aspen.” That’s the good part of having an Aspen tree. The not-so-good part is its affinity to diseases. In fact, the Forest Services of the Department of Agriculture warns that a scratch on the bark can spur an bushfalling.barted Reading Time: 2 mins.

Oct 26, It is becoming an increasingly common tragedy for large stands of aspens to fall victim to an unknown natural nemesis. Entomologists investigating the sudden and unexplained deaths of large clones of aspen trees have named the troubling phenomena SAD, Sudden Aspen Decline. Feb 17, In the fall, aspen tree leaves turn spectacular golden yellow, orange or bronzy-red. The quaking appearance and rustling noise of aspen trees are due to the leaves.

The short, flattened stems are attached at right angles to the flat leaf. The growth habit causes even in the slightest of breezes to make aspens quake. Oct 04, Spring, summer, fall (and sometimes even winter) are often on the dry side here in Colorado and leaf scorch is common among trees not accustomed to drier growing conditions. Aspens being one of them. Once leaf scorch has occurred on your aspen trees, there is no cure- not even the urge to provide additional moisture will do the bushfalling.barted Reading Time: 2 mins.