Loquat gets brown spots - possible causes and treatment tips

Loquat gets brown spots - possible causes and treatment tips

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If the loquat gets brown spots on the leaves, this can have several causes. For example, Parasites, the so-called leaf tan or frost damage are to blame.

Brown spots can have several causes. Brown spots are not uncommon with the loquat. They always point to grievances on an evergreen plant like the glossy loquat. The stains often stem from frost damage or clearly indicate a parasite infestation. No matter what triggers the formation of the stains, you always have to act quickly to avoid greater damage to the cotoneaster.

Brown spots due to frost damage

Frost damage occurs when the plant is exposed to the winter sun, but the soil is frozen for several days. The plant then loses moisture through the sun, which it can no longer absorb through the earth.

➜ Combat:

Here it is important to nip the cause in the bud if possible. If the winter weather is extremely dry, you should water the soil around the loquat so that it has enough water available.

However, since parasites can also be responsible for brown spots on the leaves, you should first remove the damaged leaves and dispose of them in the household waste.

Brown spots from parasites

While frost damage is annoying but easy to remedy, you have to fight parasite infestation with, for example, the black weevil or aphids.

➜ Combat:

As already mentioned, the leaves that are damaged are always disposed of first. If the spots already affect the leaves of an entire shoot, remove the plant part if possible. The lozenge is not damaged if you cut the plant back so far that the cut goes right into the old wood.

If large parts of the loquat are affected, you must fight the parasites with a special agent from the specialist trade. For example, weevils are best fought with nematodes. Aphids, on the other hand, do very well with a mixture of water, soap and rapeseed oil that you need to spray on the plant.

Reddish or black spots due to leaf tan

Depending on the leaf color and the shape of the spots, it is difficult to determine the actual spot color. Therefore, in this article we would also like to deal with the black or reddish spots, which indicate that there is a fungus attack on the glossy loquat, and indicate the leaf tan.

➜ Combat:

You do not necessarily have to remove infected leaves, only if you want to make sure that there is no parasite infestation. On the other hand, an agent based on copper sulfate is suitable for combating the fungus. We recommend e.g. NEUDORFF Atempo Copper-Mushroom Free.

You can prevent the so-called leaf tan and the resulting red or black discoloration on the leaves by strengthening the plant itself. For example, nettle slurry works very well as a spray.

Recommended reading:
Loquat: Identify diseases and pests and combat them effectively