The slightly poisonous Gardenia jasminoides is quite demanding in terms of care. If it is not cared for properly or in the wrong location, it will drop its flower buds or develop brown leaves. How can you prevent brown leaves?
What causes brown leaves on Gardenia jasminoides and how to prevent it?
Brown leaves on Gardenia jasminoides usually indicate iron deficiency. To remedy this, fertilize every two weeks during the summer and use lime-free water for watering. Administering additional iron and occasional spraying with lime-free water increases air humidity and prevents dryness.
Iron deficiency cause of brown leaves on Gardenia jasminoides
If the Gardenia jasminoides has brown leaves, this almost always indicates an iron deficiency. Fertilize the plant every two weeks during the summer months. Sometimes it helps to repot the gardenia in fresh substrate.
As a first aid, it is also recommended to give the Gardenia jasminoides additional iron (€6.00 on Amazon).
Drought can also cause brown leaves. Humidity plays a particularly important role here. Spray the gardenia occasionally with lime-free water.
Tip
Like all gardenias, Gardenia jasminoides is very sensitive to lime. Therefore, always water with stale rainwater that is not too cold. Alternatively, use still mineral water.