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What is the best treatment for box blight?

By Jessica Cortez

What is the best treatment for box blight?

Affected areas should be hard pruned and these branches burnt. Treat the cut areas with a fungicide available to gardeners for treating box blight such as TopBuxus, which many gardeners are reporting good levels of control with.

What kills box blight?

Triticonazole (Fungus Clear Ultra) is labelled for control of other diseases on ornamentals and could therefore be used legally on box (at the owner’s risk) to try and control box blight. Tebuconazole is effective against both genetic types of Cylindrocladium.

How do you treat blight on Buxus?

Curative

  1. Prune out all badly infected limbs. Sterilise your pruning equipment with dilute bleach or meths between plants.
  2. Clear away leaf litter from in and under the buxus.
  3. Spray PLANThealth Buxus Blight Buster or Fungus Control onto the foliage and drench the roots using a watering can.

How do you get rid of box hedge blight?

Option 1: remove minor or isolated infections

  1. Cut out a little more than you think is necessary as some infections are likely to be latent (not yet visible)
  2. Do not touch healthy box plants immediately after working on an infected area.
  3. Consider applying a fungicide (see below) before cutting and again after two weeks.

What is killing my box plants?

What Causes Box Blight? Box blight is usually caused by Cylindrocladium buxicola or Pseudonectria buxi, both fungal infections making the leaves turn brown or grey/pink or bronze and causing dieback of the Buxus stems, in ideal conditions of warmth and moisture hedges and topiary specimens can spread quickly.

How do you revive a dying Buxus?

Prune these cracked and brown branches ready for fresh, new growth in the spring. Healthy wood and green stems allow the Buxus to begin reviving. However, there are times where the whole plant may be brown and cracked. In an attempt to revive the Boxwood shrub, you can cut the whole plant back to the stem.

How bad is box blight?

A Even the more virulent form of box blight is rarely fatal, and new growth usually appears. However it can be seriously disfiguring — dwarf hedges typically have a dead-looking top, and green sides with brown patches here and there.

Can you save a dying boxwood?

Managing boxwood decline should include allowing air and light into the center of the shrub. If you see discolored or withered leaves, remove them by shaking the plants gently then picking out the dead foliage. Prune out dead and dying branches, which also thins out the center of the plant.

Can you cut Buxus right back?

Buxus responds well to hard pruning and can even be cut back to within 30cm of the ground. Box hedges will recover well and quickly bounce back to their best. Buxus responds well to hard pruning and can even be cut back to within 30cm of the ground. Box hedges will recover well and quickly bounce back to their best.

How are fungicides used to treat box blight?

An integrated approach to the control of box blight is always most successful. Bolstering true fungicides such as those above with plant biostimulants which counter disease development, can be a very successful approach. These products are not classed as pesticides and very effective when used early and regularly to maintain protection.

What should I do if I have box blight?

Regardless of which option you choose, when you’re finished pruning, it is a good idea to spray the remainder of the plant with a fungicide to kill off any lingering spores. There are also some box blight commercial treatments available. These specialised fungicides are perfect if the affected areas are too small to prune.

When to spray for Ashridge Tree box blight?

Our belief is that good planting, in soil containing plenty of organic matter, top dressing with blood, fish and bone in the spring, and a precautionary spray with a fungicide such as Scotts RoseClear3 in early April will go a long way towards preventing outbreaks of box blight. We would also advise never clipping a box hedge in warm,…

How to treat volutella blight on boxwood trees?

To control or prevent this disease, the following precautions should be taken: Ensure boxwoods are planted in well-drained soil with a soil pH between 6.8 and 7.5. Spray boxwood with a copper-based fungicide before new growth emerges in spring, then spray again immediately following pruning, and again in summer and autumn.

Which is the best treatment for box blight?

An alternative approach is to use a plant biostimulant that counters the disease development and impersonates the effect of a fungicide. These products are not classed as pesticides and very effective when used early and regularly to maintain protection. The best product for this use is Amvista Resistor.

Which is the best fungicide for boxwood blight?

The more effective homeowner fungicides for the control of boxwood blight are chlorothalonil or chlorothalonil mixed with thiophanate methyl. See Table 1 for examples of brands and specific products.

How does box blight get into your garden?

The primary route by which box blight could get into your garden is on newly bought plants. Another way is on tools that have been used on infected plants. This is particularly relevant if you employ a mobile gardener. Contaminated boots and clothing could also bring in the blight’s sticky spores.

How often should you water a box blight plant?

Water the base of the plant, not the overhead. Monitor your plants. Box blight can be a stubborn infection, so don’t be surprised if the infection flares up again after the first treatment. Check the recovering plant at least once a week so that you can quickly identify and treat any new signs of infection.