Content
- Diseases are very rare in ilex crenata
- The robust ile crenata seldom suffers from diseases
- Which diseases occur?
- Watch out for pests!
- The leaves of the Ilex crenata turn yellow
- Tips
Ilex crenata rarely gets ill
Diseases are very rare in ilex crenata
Not for nothing the Japanese holly Ilex crenata has nearly outpaced boxwood as a hedge plant. Diseases are extremely rare and almost always due to care mistakes. Ilex crenata is very easy to care for.
The robust ile crenata seldom suffers from diseases
Ilex crenata is an evergreen, very robust plant. In a good location, she hardly needs care. Diseases are very rare, and then it is usually in a wet or windy location.
If the plants are weakened, they are more likely to suffer from disease or pest infestation. In this case, fertilize twice a year with organic fertilizer.
Which diseases occur?
Soil fungi cause the roots of the Ilex crenata to rot. You can detect a fungal disease from a foul odor emanating from the Ilex. Then take a look at the roots. If the root tips have died and the root shows a white coating, it is fungal attack.
Sometimes the plant can be saved by pruning the root and another location.
If the leaves bleach, the gardener speaks of a chlorosis. This disease is triggered either by a too dark location or too high a pH in the soil. If necessary, have the soil examined in the laboratory.
Watch out for pests!
Few pests are causing trouble for the Ilex crenata. This includes the spider mite, which occurs in very dry climates. It shows through small dots on the leaves, young leaves wither and fall off. The spider mite sucks on the underside of the leaf, damaging it.
Take pase action. Chemicals should be avoided. Natural enemies are much safer and more effective. Therefore, use the following biological control agents:
As a precaution, you should wet the leaves of the Ilex crenata in very dry times, just on the undersides with water.
The leaves of the Ilex crenata turn yellow
When the leaves of the Ilex crenata turn yellow, it almost always indicates too much moisture. If possible, make sure that the soil is well permeable to water before planting, so that no waterlogging can form. Water regularly but only so that the soil is always slightly moist.
Watering is also important in autumn and winter. This often causes problems because the plants are too dry.
The longer the Japanese holly is in the same place, the less you have to take care of the irrigation. Older specimens provide themselves with the deep roots themselves.
Tips
The berries of Ilex crenata are poisonous. If you have children or pets, you should therefore plant the variety Ilex crenata Dark Green. This is a male species that does not attack berries.