If the leaves of basil turn brown, this is a clear indication of he alth problems. These can be due to neglect in care, illness or pest infestation. The following overview shows the direction in research into the causes.
What causes brown leaves on basil?
Brown leaves on basil can be caused by neglected care, such as incorrect temperatures, wet or nutrient-poor substrate, or small containers. Diseases such as wilt, stem rot, leaf spot or pests such as aphids can also be the cause. Biological control methods are recommended for home gardens.
Failures in care
Since basil migrated from tropical regions, the herb plant depends on an adequate location and careful care. The following defects can cause brown leaves:
- a location that is too cool with temperatures below 12 degrees Celsius
- a substrate that is too wet or too nutrient-poor
- too small a planter
Diseases and pests
If the causes of brown leaves are not due to care errors, it is usually one of the following diseases or a cunning pest:
- Wilt or stem rot (Fusarium oxysorum)
- Leaf spot disease
- Aphids
- Barn Owl
- Common meadow bugs
Combating diseases and pests with chemical agents is frowned upon when it comes to food in the hobby garden. There is now a wide range of biological control methods available, in harmony with nature and for the benefit of he alth.
