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Garden lovers and hobby gardeners know the problem: plants that simply do not want to grow properly - no matter what you do. The reasons are mostly diseases and pests that affect the plants. Which ask our Facebook community special problems, we asked last Sunday.
This year, the boxwood cinder is by far the biggest challenge in the gardens of our users. After years of unsuccessfully combating the pests, some have now decided to part with their box trees. Even Irmgard L. regrets having to dispose of her 40 box trees - but has seen no other way out. So if you want to make short work, should remove its boxwood and replace it with other plants. If you still have some patience and want to keep your boxwood, you have several options.
Fighting the boxwood conifer
To prevent an extreme increase of the boxwood conifer in your garden, you should already fight the first generation of caterpillars in spring. With individual plants one can carefully collect the caterpillars with tweezers - this is tedious, but effective in the long run. Also, "blowing through" with a high-pressure cleaner or strong leaf blower can be effective.
Good experiences were also made with the active ingredient "bacillus thuringiensis". It is a parasitic bacterium that proliferates in the caterpillar's body and kills the pests. Appropriate preparations are offered under the trade name "Xen Tari". Be sure to use the insecticides thoroughly and at high pressure to allow the active ingredients to penetrate into the interior of the boxwood.
The boxwood borer is a particularly widespread pest that originated in East Asia
Annette W. also knows a proven method of combating. In midsummer, simply put a dark garbage bag over the boxwood. The extremely high temperatures cause the caterpillars to die off. The boxwood takes, because of its high heat tolerance, no harm. Since the boxwood's eggs are well protected by their cocoon, they also survive this method unscathed. Therefore, you should repeat the process approximately every 14 days.
Only when the natural control agents are unsuccessful should you use chemical products such as "Schädlingsfrei Calypso" from Bayer Garten. Also very effective is "Pest Free Careo" by Celaflor.
The black spot (Diplocarpon rosae) is an ascomycete fungus (Ascomycota) from the subsection of the genuine ascomycete fungi (Pezizomycotina). The disease is also referred to as black spot disease and is always a problem of our community, as Tina B. confirmed. Especially on shrub roses, it has the pathogens. At the first signs of infestation, you should immediately cut off sick and infested shoots with a sharp knife. Do not dispose of the diseased plant parts in organic waste or on compost! In addition, disinfect the garden tools used to prevent spread of the fungus.
Sternrußtau, also called black spot disease, is a hose mushroom, which has it apart primarily on shrub roses
Snails are a well-known plague in the garden. Maria S. is also familiar with the hungry mollusks. There are many recommendations on how to fight the snails. Best known is the so-called slug pellet. Use the preparations as early as possible (March / April) to decimate the first generation. It destroys the body tissues of animals and causes increased mucus production.
If you have more time and patience available, you can also collect the snails. Through boards in the bed or entangled plants such as tagetes and mustard, the snails can be concentrated in one place. This facilitates collection later.
Those who find pest control too strenuous in the long run should be pragmatic, as Susanne B: "If you like it in my garden, you should grow it, and if you do not, it will just stay away."