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Frangipani - Detect and combat diseases and pests

The frangipani is one of the vulnerable plants. Different pests and diseases can severely affect the plant and even cause it to die. However, a simple maintenance measure often helps.

Some pests and diseases can affect the frangipani (Plumeria) infested. It is not uncommon for these to be damage patterns that have arisen due to maintenance errors and can be remedied by courageous intervention without causing lasting damage to the plant.

Unfortunately, the exotic beauty can also be affected by diseases for which there is less chance of being saved.

Fungal diseases on the frangipani

❍ Black Tip Fungus

This pils is grown extensively in the Asian region. The original form of this mushroom is even edible and is commonly called "Judas ear". For frangipanis, the black mushroom can unfortunately often even mean death. First the shoot tips are affected. If this goes unnoticed, the fungus can work its way through the entire plant and ultimately lead to its death. The fungal infection often arises from a too cool or too dark location.

" What should I do?

  • Remove affected areas in good time
  • treat with fungicides
  • Put the plant in a new location

" Watch out: Plumeria obtusa is particularly susceptible to this fungal disease.

❍ anthracnosis

Anthracnose is a collective term for a number of fungal diseases that can affect not only frangipanis, but also grasses, grapevines or berries. The fungal infection is shown by dark red to black dots on the leaves. These are often caused by watering the plant overhead or by downpours on warm summer days when the plant is standing outdoors unprotected. The injuries can only affect parts of the leaves, but can also affect the entire leaves. If the disease progresses untreated, the leaves turn yellowish to orange. The black fruiting bodies can be seen on the affected parts of the plant. Eventually all the leaves turn yellow and the plant dies.

" What should I do?

  • Do not put irrigation water on the leaves
  • do not spray
  • protected location outdoors
  • Treatment with fungicides with copper oxychloride

❍ rust

This disease is extremely rare in our latitudes. The climatic conditions alone prevent it from spreading. The fungal disease occurs when there are high temperatures coupled with high humidity. In the tropics, however, the plants are very often affected. Infestation is initially expressed by orange dots on the underside of the leaves. In the advanced stage, the top of the leaf turns brown and the leaf falls off. Rust is particularly common in late summer and early autumn.

Pests on the frangipani

❍ spider mites

Dry heating air can promote spider mite infestation in the cold season. The leaf suction cups are only a few millimeters in size. The spider-like pests cause greenish spots on the top of the leaf. A clear sign of an infestation are also net-like structures located at the tips of the shoots.

What should I do?

  • Wash off the plant with lukewarm water
  • Protect the root ball from moisture
  • if necessary, use of a special pest spray

❍ broad mite

Even with a magnifying glass, it is difficult to identify the common mite. In return, it leaves an unmistakable damage pattern. The young leaves appear deformed and show gray-black scars. Fully grown, the leaves are strongly wavy at the edges and often completely purple in color.

What should I do?

  • Avoid a humid, warm location
  • Use sharpener with dicofol

❍ White fly

The whiteflies are a pest that is visible to the naked eye. There is no infestation in the field. In contrast, the pests can overwinter in greenhouses and conservatories. The plant suckers come from South America and are about two millimeters in size.

" What should I do?

  • Use parasitic wasps
  • Use pesticides

❍ Thrips

These pests leave a similar damage pattern as the spider mites. In addition to the characteristic green spots, there are black spots on the top of the leaves caused by feces. An infestation can be recognized very well by a silvery leaf color and a deformed leaf growth. The pests eat the top of the leaves and use the leaf veins to lay their eggs. Dry heating air can promote infestation.

" What should I do?

  • Expose the plant to high humidity
  • frequent spraying
  • Treat the leaves with soapy water

❍ Black aphid

The plant is not spared from aphids either. An increased infestation can be observed especially in spring. If the pests are on the tips of the shoots, this causes the newly emerging leaves to deform.

" What should I do?

  • Brennnesselsud
  • Aosis
  • Knoblauchsud
  • vinegar
  • Black tea

Nursing mistakes and their consequences

Some diseases and damage patterns can be avoided by caring for the plants appropriately. A particularly common reason for fungal diseases is that the root area is too wet.

Leaf deformation due to stressIf the leaves do not show their usual splendor, this is usually a reaction to a stressful situation that the plant had to survive. This can trigger pest infestation as well as repotting or watering errors. After removing the deformed leaves and avoiding stressful situations for the plant, normal leaf growth should resume.
Stem rotIf the plants leave the winter quarters, stem rot can occur. Young plants are increasingly affected. The algae fungus can penetrate through injured areas on the plant. If the plant is affected by stem rot, a complete pruning should be carried out.
sunburnAfter winter, frangipanis should slowly get used to the sun. If this is not done, the plant will get a sunburn. If the plant spends a few days in the shade and then changes to the actual place of sunshine, sunburn of the leaves should be avoided.

❍ Root rot after hibernation

If the plant does not seem to get going after the hibernation and lacks new shoots, it can quickly be concluded that there is a lack of nutrients. There is usually no thought of rotting in the root area. However, this type of damage is not uncommon and occurs in around 90% of all cases. If the plant was permanently too damp during winter rest or watered too heavily after winter rest, the roots will quickly start to rot. This is favored if the water cannot drain and there is waterlogging.

" What should I do?

  • Transplant plant
  • Carefully detach the soil from the roots
  • Remove brittle roots
  • do not pour excessively
  • Wait for new roots to form

" Tip: Fresh, white roots can be watered normally.