Boxwood diseases from native to exotic: first aid tips

Boxwood diseases herald the end of the buxus. Find out here what you can do against pests and what alternatives there are to boxwood.


Boxwood diseases from native to exotic: What to do?

Boxwood diseases have been heralding the end of the buxus in German gardens for some time. Whether it's the boxwood borer introduced from Asia or the numerous native pests: they all do their best to turn a well-tended garden into a brown-grey tragedy. In the following article we tell you what you can do against boxwood diseases. We also introduce the Bloombux as a flowering alternative to permanent pest control.

The "star" among boxwood diseases: The boxwood borer

Let's start with one of the most well-known boxwood diseases: Box borer! This is a butterfly whose caterpillars destroy the foliage of the plant, leaving only brown skeletons surrounded by webs.

What to do against box elder borer?

Home remedies: There are various ways of combating the boxwood borer. These include hosing down the infested plants with a high-pressure cleaner, but collecting can also help to contain an infestation. Algal lime is a biological fertiliser that should help the plant resist infestation with this and other boxwood diseases for longer. ichneumon wasps attack the larvae of the borer and birds appreciate the caterpillars as a source of protein.

Chemical agents: Do you want to use sprays against your boxwood diseases? Do not do it! All commercially available products are also harmful to beneficial insects - even those that are supposedly bee-friendly.


Other imported boxwood diseases: Spider webs conditionally indicate spider mites

Boxwood spider mites were imported from North America. You can tell if your boxwood is infested by tiny white or yellow speckles on the leaves. These turn reddish and die. When temperatures drop, spider mites automatically stop reproducing, but if you want to do something specifically against the pests, you can use products based on rapeseed or neem oil in the spring. Later in the year, potassium soap, which is also found in many aphid remedies, is suitable. The spider web-like webs typical of other species are rarely built by this variety. If you discover such webs on your Buxus, this is more likely to indicate an infestation of borers.


Native pest: the boxwood flea

In this country, too, the Buxus has harmful "lovers". One of these is the boxwood flea. The larvae suck on the leaves, causing them to turn yellowish-brown and curl like spoons. This boxwood disease can be recognised by white flakes: the excretions of the larvae with which they protect themselves from predators. To combat the flea, infested shoots must be cut out at an early stage. Everything else, such as oil-based products or painting the trunk, also affects beneficial insects.


Pilze als unsichtbare Buchsbaum Krankheiten

Während Schädlinge mit dem bloßen Auge gut erkennbar sind, fallen Pilzerkrankungen erst auf, wenn die Pflanze bereits Schaden genommen hat. Zu diesen Buchsbaum Krankheiten gehören Infektionen mit dem Buchsbaumpilz, Buchsbaumkrebs oder Buchsbaumrost. Charakteristisch für alle sind anfangs gelbe bis bräunliche Flecken. Es folgen bräunlich, vertrocknende Blätter und Triebe, die schließlich absterben.

Pilzerkrankungen treffen fast nur geschwächte Pflanzen. Standort, Pflege und eine ausreichende Nährstoffversorgung sind deshalb essenziell, um Erkrankungen zu vermeiden. Ist Ihr Buxus schon betroffen, hilft nur noch starkes Zurückschneiden und als letztes Mittel: Spritzen

When everything comes together: leaf spot disease

Your boxwood has been hit really badly if it is affected by leaf spot disease. This is an infection caused by three types of fungus. Plants that are already weakened by pest infestation, poor care or an unsuitable location are affected. Leaf spot disease can be recognised by white or light brown spots that slowly merge together. Black fungal spores can be seen on the top of the leaves. Eventually the leaves and shoots die. To treat this boxwood disease, only radical pruning and spraying with chemicals will help.


Prevent diseases with Bloombux Boxwood

Would you like to enjoy your garden instead of spending your time outside fighting pests? Then choose Bloombux. Because this boxwood substitute is a rhododendron, it is unattractive to the boxwood borer and other boxwood diseases. Bloombux is also exceptionally robust and pruning tolerant. Whether topiary, low hedge in the cottage garden or specimen, everything that is associated with boxwood also works with Bloombux. In addition, it delights with its lush summer flowers. So in addition to a healthy, green hedge and topiary, you can also enjoy a pretty sea of flowers with Bloombux.