Content
- Common pests on the lilac and what you can do about it
- Fliedermination Moth, Minier Moth or Lilac Moth (Gracillaria syringella)
- Lilac Tortoise, Black-weevil (Otiorhynchus rotundatus)
- Hornets (Vespa crabro)
- Gall mites (Eriophyes loewi)
- Tips
The lilac moth likes to eat the lilac
Common pests on the lilac and what you can do about it
Although the popular ornamental lilac is considered robust and robust, it is not immune to diseases and pests. In particular, when brown spots on the lilac leaves occur, you should first think of a pest infestation and then search the shrub. Which pests are particularly common on the lilac and what you can do about it, you will learn in this concise summary.
Fliedermination Moth, Minier Moth or Lilac Moth (Gracillaria syringella)
The miner's moth is an inconspicuous, small butterfly whose pupae overwinter directly on the lilac. Finally, in May, the larvae hatch, feeding mainly on the leaves. Rarely are they also found in the soft shoot axes. Miner moths are very common not only on the lilac, the first generation usually leaves hardly any damage.
Lilac Tortoise, Black-weevil (Otiorhynchus rotundatus)
This is a red-brown beetle of up to six millimeters in length, which only eats at night and stays on the ground under leaves and other hiding places during the day. Even his larvae live in the ground and can severely damage the roots by their hunger. An infestation can only be determined by tricks: Put a wood-filled clay pot under the lilac, the weevils will use it as a hiding place and you can collect it.
Hornets (Vespa crabro)
Hornets mainly use wood or bark for the construction of their nests, which they peel themselves from the trees - for example, the lilac.
Gall mites (Eriophyes loewi)
These are tiny, only about 0.2 to 0.5 millimeters large mites, which belong to the arachnids and feed on plant juices.
Tips
If, despite obvious damage to the lilac, no pests are found, then in many cases a fungal infection is behind it.