BOXWOOD FIRE - HOW TO COVER AND GET RID OF?

RULES FOR FIGHTING WITH BOXWOOD FIRE

Boxwoods are hardy plants that are resistant to drought and exhaust gases. Their dark, rich greenery can decorate the garden at any time of the year. Another important advantage has always been the almost absolute resistance of boxwood to pests and diseases.

But since 2015-2016. the situation has changed. A real scourge of boxwood plantations came to the country - boxwood moth. Our climate suited this butterfly, but it did not have natural enemies here. Therefore, without pest control, boxwoods die quickly enough.

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BOXWOOD FIRE - DESCRIPTION

The boxwood moth is a rather large butterfly with brown wings bordered with a white stripe. Caterpillars are dark green, with sparse hairs, the head is black. First, they live inside a boxwood leaf, gnawing passages in it, and then they actively feed on the leaves. At the same time, the caterpillars also secrete toxins that poison the plant.

Butterfly flight begins when the daytime temperature rises to 12-14 °C. At this time, they mate and lay their eggs on the leaves and young shoots of boxwood. Each butterfly is capable of laying 100-150 eggs, from which caterpillars hatch. After 3-4 weeks, the moth caterpillars pass into the pupal stage. The length of the pupa is 2,5-3 cm. After another 10-15 days, butterflies emerge. Under the conditions of Ukraine, moths give 3, and in warm autumn even 4 generations per season. The moth hibernates in the form of a cocoon, fixed in a thick cobweb between boxwood leaves. The chrysalis is not afraid of our frosts. Sometimes wintering of caterpillars is also observed.

HOW TO FIGHT FIRE ON BOXWOOD?

Pest control begins from the moment the butterflies begin to fly. To do this, the bushes are treated with contact insecticides: Bi-58 New, Actellik (12 ml / 10 l), Provanto-profi. Karate Zeon or Opercut.

Repeated treatments are best carried out with systemic and systemic-contact preparations, since the younger caterpillars are well covered in the plant. Ampligo, Koragen, Movento are effective, to a lesser extent Engio and Aktara. You can supplement the processing on the sheet by watering the bushes under the root with Aktara's solution (6-10g / 10l).

The second or third treatment should be carried out with Prokleim or Match preparations - they are especially effective in relation to caterpillars. Periodic spraying with biological products Lepidocid, Boverin, Bitoxibacillin also reduce the number of pests.

But the main thing - you can not stop processing. Boxwood is endangered until late autumn, and the bushes need to be sprayed every 3-4 weeks, regardless of the presence of damage. When they are already visible, the bush loses its decorative effect and requires restoration.

Heavily damaged plants after the destruction of the caterpillars are fed with autumn complex fertilizer (even in summer!), They are treated with Megafol preparations on the sheet. Isabion, fertilizer Plantafol 20.20.20, Brexil-mix and Brexil-calcium, watered regularly. But the sooner you start the fight, the easier it will be for the plant to recover. Do not wait for the complete loss of leaves, because the bush may die!

Timely prevention, a clear schedule of treatments and proper feeding in the complex will allow you to save your favorite boxwoods even in new conditions!

OTHER REASONS FOR YELLOWING BOXWOOD

Boxwood leaves turn yellow. The bush grows in a bright place without direct sunlight. How to help the plant?

Sergei Somoletnikov, Yaroslavl

It's hard to tell what's going on without a photo. There can be several reasons for this phenomenon, I will name the main ones.

AGE WISH.

Part of the leaves from the bottom of the bush always turns yellow and crumbles in spring, because on average a boxwood leaf lives 5-8 years.

SEASONAL YELLOWING IN SPRING.

The color change of boxwood leaves in spring, called "winter bronzing", is a reaction to stress caused by changing day and night temperatures, return frosts, exposure to strong winds and bright sun when planted in an unprotected place. With the advent of steady heat, boxwood usually recovers itself, giving a young green growth. To help the plant survive stress, shade it with non-woven fabric from January.

MOISTURE DEFICIENCY IN THE SOIL BEFORE THE PERIOD OF REST.

In this case, autumn moisture-charging watering will help out.

INCORRECT CARE.

The leaves may turn yellow from overflow or lack of nitrogen in the soil. Monitor the moisture content of the substrate and annually, before the shoots begin to grow, feed the bush with a complex mineral fertilizer.

Pests and diseases. In recent years, boxwoods have become more sick. At the same time, boxwood moth often attacks them first, and then weakened plants infect diseases. One of the most dangerous pathogenic fungi is Cylindrocladium buxicola. It is believed that he came to us with planting material from foreign nurseries. The disease actively develops in conditions of high humidity and temperature. Against the pest, treatment with systemic insecticides is used ("Aktellik", "Engio", "Operkot"; according to the instructions), and fungicides are used to combat various fungal diseases ("Raek", "Skor", "Diskor", "Medea"; according to the instructions). instructions).

Reference by topic: Box fire - photo of the pest and expert advice on how to get rid

HOW TO GET RID OF THE FIRE ON THE BOXWOOD QUICKLY AND EFFECTIVELY - VIDEO

How to get rid of a moth on a boxwood quickly and effectively

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Dacha with their own hands > Tips for the summer owner > Control of pests and diseases of plants > Has the box turned yellow? How to save boxwood from boxwood moth!

2 Review (s)

Ksenia Morozov, Podolsk
21/03/2023 (16:30) #

At the end of last season, I noticed dark, almost black, spots on the lower leaves of boxwood. What could it be? Is it dangerous for the plant? Is it possible to process a bush with something in the spring?

- OOO "Sad"
  21/03/2023 (16:30) #
  
  - Most likely, this is an infectious drying out. The disease is caused by the fungus Cylindrocladium buxicola. The main symptoms are the appearance of dark, almost black, spots on the leaves, which gradually merge and can cover the entire leaves. As a result, they turn brown and fall off. Such spots also appear on the shoots. The disease spreads from the bottom up and captures the entire boxwood. If left untreated, death is inevitable. In addition, one affected specimen is capable of destroying other bushes growing nearby. The optimal temperature for the growth of the pathogen fungus is + 20-25 degrees. In the heat of +30 degrees, and above, as well as in cold weather below +5 degrees. the development of the disease stops.
  
  As therapeutic agents, Strobe and Bellis or Rakurs (all according to the instructions) are most effective when used in combination. In the spring, April, a sick specimen is treated once with the Strobi preparation, then after 7-10 days - with Rakurs or Bellisom, with a repeat after another 7-10 days. Before processing, severely damaged shoots are cut to healthy tissue and all fallen leaves are removed. It would be useful to cultivate the soil in the near-trunk circle.
  As a preventive measure, if diseased plants were seen near the site, in late April-early May, once or twice (with an interval of 2 weeks), the boxwoods are treated with "Foreshortening" (according to the instructions).