Only fertilize the magnolia a little

Only fertilize the magnolia a little

The right soil for magnolias

Magnolias can be real divas: if they are not feeling well, they show it very clearly and simply refuse the desired flowering. In order not to give your magnolia a reason for such fussing, it is best to ensure optimal conditions when planting. In addition to the right location, a humus, slightly acidic soil is essential. Sandy soils are unsuitable for magnolias, while loamy soil should be enriched with plenty of rhododendron soil before planting.

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  • Magnolia has yellow leaves, what to do?
  • Leaves of the magnolia indicate the health of the plant

Preserve acidic soils

If your magnolia has been in acidic soil for a few years, but is ailing, these two causes in particular come into question: Acid soils usually contain little magnesium, which is also used up after a certain period of time. In this case, fertilize your magnolia with a fertilizer containing magnesium. Make sure, however, that most commercially available ready-made fertilizers contain little or no of this mineral. However, applying an Epsom salt solution can help, although you can also use it preventively. Furthermore, a previously acidic soil can change its pH value unnoticed. In this case, the generous distribution of bog soil in the root area helps.

Ripe compost is sufficient for healthy magnolias

Healthy magnolias are provided with a thick layer of ripe (that is, well-rotted) compost in both spring and autumn. When working in the root area, be careful not to work too deep due to the shallow roots. The autumn compost should help your magnolia tree to survive the winter more easily. Further fertilization (e.g. with ready-made or liquid fertilizers) is not necessary for magnolias planted in the garden. Pot magnolias, on the other hand, need regular fertilization about every two weeks with a good liquid fertilizer. A rhododendron or bog bed fertilizer is also optimal here.

Recognize and counteract deficiency symptoms

In the following overview, you can assign the abnormalities noticed on your magnolia tree to the corresponding deficiency symptoms at a glance and act correctly. You are not doing anything wrong, however, if you supply your ailing magnolia with rhododendron or bog fertilizer. This has been specially developed for the needs of plants growing on acidic soils.

abnormalitiesWhat is missing?Countermeasures
Leaves turn light greennitrogenFertilization with nitrogenous fertilizers (e.g. yellow grain)
Leaves turn yellow-greenmagnesiumFertilization with Epsom salt solution
Leaves develop necrosis between leaf blades (i.e., brown or black spots)magnesiumFertilization with Epsom salt solution
Leaves turn brown from the edge of the leafpotassiumFertilization with Thomaskali
Leaves turn yellowpotassiumFertilization with Thomaskali
Leaves turn blue-grayphosphorusFertilization with Thomaskali
Leaves turn yellowironFertilization with iron fertilizer
Pale leaves with strong green veinsironFertilization with iron fertilizer

Tips & Tricks

Magnolias do not have a particularly high need for nutrients and are therefore at risk from possible over-fertilization. It is better to pay close attention to the leaf color and the flowering behavior of your magnolia tree, then you can quickly compensate for any existing nutrient requirements.