Content
- The Japanese umbrella fir has yellow needles - why?
- The milieu is not right
- The nutrient balance is unbalanced
- The wrong location was chosen
- An infestation with spider mites
- Tips
Yellow needles are mostly showing signs of dryness
The Japanese umbrella fir has yellow needles - why?
Usually they are the most beautiful feature of the Japanese umbrella fir. They are shiny, dark green, leathery and stand together in umbrella-like formations. But when the needles, which are about 10 cm long, become yellowish, it is time to stop carefree.
The milieu is not right
The most common reason for yellowish needles is dryness. The Japanese umbrella fir needs a lot of moisture. Since she is a Flachwurzler, she does not come to the groundwater and is dependent on water from above. Persistent dryness means stress for them and as a result the needles turn yellowish.
Particularly endangered are umbrella firs in the bucket. Here you should take care that the root ball never dries out. With Japanese umbrella firs in the field, you can mulch the root area as a precaution, for example with bark.
Far less rare, this plant is too wet and suffers from waterlogging. Also waterlogging and concomitant rot can lead to yellow needles. Prevent by planting your conifers in a permeable and medium-heavy soil!
The nutrient balance is unbalanced
Also the nutrients can play badly the Japanese umbrella fir:
The wrong location was chosen
Following site features can make a Japanese umbrella fir look old / yellow fast:
An infestation with spider mites
In rarer cases, and more in bucket culture, spider mite infestation leads to yellow needles. These animals suck out the needles at the bottom. Over time, the needles lose so much nutrients that they fade. Here a powerful shower helps to remove the spider mites.
Tips
If nothing is changed at the site or the care, often follow the yellow needles brown needles, which should soon fall off or be cut off.