Asparagus densiflorus is actually one of the undemanding, relatively robust plants. But even the ornamental asparagus is not immune to diseases and pests, which is often reflected in the discoloration of the false leaves. In this article you can find out what else can be to blame for the yellowing of the leaves and what you can do about it.
If the ornamental asparagus turns yellow, this can have various causes
care mistakes
If the leaves of the ornamental asparagus turn yellow and the fragile leaves begin to trickle, you have most likely forgotten to water or fertilize.
remedy
- Always water ornamental asparagus when the substrate feels dry on the surface (thumb test).
- Repot the plant at least every two to three years. If the pot is too small, the few remaining soil can no longer store any nutrients.
- Regularly add green plant fertilizer to the irrigation water in the dosage indicated on the packaging.
root rot
If you meant too well with the watering and didn't dump away excess water in the saucer, root rot could be the cause of the wilting shoots. The storage organs begin to rot due to the insufficient ventilation of the over-soaked substrate and can no longer supply the plant with sufficient water and nutrients.
If you pull the ornamental asparagus out of the pot, you will notice a musty smell. If you free the roots from the soil, they are no longer crunchy, but soft and mushy.
remedy
Wrap the storage organs in kitchen towels several times, this will draw the excess water out of the soil and roots. Then place the plant in fresh substrate and water significantly less in the future.
Infestation with sucking insect pests
Unfortunately, the ornamental asparagus is relatively often attacked by spider mites. The small animals in the delicate foliage of the plant are difficult to spot with the naked eye. However, these can be recognized by the fine, white webs.
remedy
Since spider mites prefer a warm, dry environment, you should spray the ornamental asparagus daily with low-calcium, room-warm water as a preventative measure.
You can save infested plants as follows:
- Place ornamental asparagus in the shower tray and rinse off with a gentle jet. Also wet the underside of the leaves, as the little creatures prefer to settle there.
- Put a large plastic bag over the plant.
- Seal the bag at the edge of the pot with a rubber band or string.
- Let stand for at least 48 hours.
- If necessary, repeat the treatment several times.
tips
Scale insects can also cause yellowing of the leaves. You can recognize the animals by their curved armor. Since these harmful insects, like mealybugs, are extremely stubborn, it is advisable to use a suitable insecticide from the garden trade in the event of an infestation.