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Three Steps To Stop Box Tree Moth

Dragonfli's Three-Step Strategy To Combat The Entire Box Tree Moth Life Cycle          

Box Tree Moths overwinter as caterpillars that hide deep inside the Box Plant foliage. As temperatures warm, the caterpillars will pupate and transform into moths. The female moths will proceed to mate and begin laying eggs in little clusters on Box tree plants. These eggs will then hatch into the damaging caterpillars that devastate and kill Box plants and hedges.

Dragonfli are on hand to help, however, and can now provide natural solutions against two critical stages of the Box Tree Moth life cycle!

             

Box Tree Caterpillars feed on Box plants and hedges and are capable of killing Buxus entirely if left untreated.

Stage 1: Catch Adult Box Tree Moths With Pheromone Traps To Reduce Egg Laying

The first step to take in combating Box Tree Moths is to set up your Box Tree Moth Pheromone Traps. These traps will catch male Box Tree Moths and prevent them from mating with females. The traps will also provide you with a valuable early warning of Box Tree Moth activity.

                              

Our Box Tree Moth Pheromone Traps are the first key component in the defence against Box Tree Moth infestations.

Box Tree Moths have 2-3 generations a year, so it is good practice to keep your Box Tree Pheromone Traps active all spring and summer. Each pheromone lure lasts about six weeks, after which it should then be replaced. You can find replacement lures by clicking here.

Pheromone traps used solely will not catch enough Box Tree Moths to prevent entire infestations, so please be sure to also follow the next steps.

             

Box Tree Moths are identifiable with white coloured wings bordered by brown. They have a wingspan of roughly 4cm.

Stage 2: Apply Nematodes Directly Onto Box Tree Caterpillars

If Box Tree Caterpillars are observed on Box plants, apply our Box Tree Caterpillar Killer Nematodes directly onto the caterpillars. Only apply the nematodes if caterpillars are present. More than one application may be required, which is why two sachets of nematodes are included in Box Tree Caterpillar Killer. Apply the first sachet when Box Tree Caterpillars are identified, and apply the second sachet about a week later.

                       

Simply spray our Box Tree Caterpillar Killer directly onto the caterpillars and the nematodes will enter the pest via a natural opening, before killing the caterpillars from inside.

Make sure unopened nematode sachets are stored in a fridge to keep them fresh, and avoid applying nematodes on bright, sunny days, as nematodes are U.V sensitive. The optimum conditions for applying nematodes are warm, overcast, humid days. Alternatively, simply apply the nematodes early, or late on in the day.

             

Box Tree Caterpillars can grow up to 30mm in length and are a greenish-yellow colour. They can be concealed within webbing spun around buxus plants.

Stage 3: Invigorate Renewed Box Plant Growth 

             

Our two natural solutions combine to provide a complete biological control of Box Tree Moths and protect your valuable Box Hedges and plants from this devastating pest.

If looking to provide your Box plants with a further aid to recovery, consider also applying our Soil Boost biostimulant granules. 

             

Soil Boost acts as an organic slow release fertiliser, helping the Box plants achieve newly invigorated growth after stress and damage.

If you ever need any further advice on how to combat Box Tree Moths feel free to get in touch via email at sales@dragonfli.co.uk, via social media, or by giving us a call on 01376 563322, and we’d be happy to assist.

Comments (42 Responses)

16 July, 2025

Mary Davies

Your pheromone traps have caught many male moths and how do I dispose of them? They are mostly alive and beautiful and I am finding it difficult to crush them ____ can I let them go in waste land 1/2 a mile away?
Mary Davies

28 June, 2025

Alan Harkus

I have had my box moth trap in use for 6days in that time I have trapped 14 moths and counting..I sprayed the hedge with nematodes ..searching my hedge I have seen very few caterpillars say 3/4. So far successful.

28 June, 2025

Ray Kendall

Why place the box moth trap near the box hedges atracting male moths to the hedges. Why not place traps away from hedges keeping male moths away from females and hedges?

26 June, 2025

Susie Morris

Hi there – approximately how long after spotting the adult male moths flying around at night does it take for the resultant caterpillars to become active? I keep dosing my hedge, which is clearly under attack from Box Moth, but the treatment don’t seem to be having any impact. Once they are caterpillars, how long is it before they pupate and then how long before they emerge as fully formed moths? Thank you. Susie.

30 May, 2025

Julian Ives

Hi Sally,

Many thanks for getting in touch.

Our Box Tree Moth Pheromone Traps will not be able to catch moths if the pest is currently in its caterpillar life cycle stage as there won’t be many about. I would therefore suggest to keep spraying our Box Tree Caterpillar Nematodes whilst the caterpillars are visibly present.

Try to ensure that the nematodes come into direct contact with the caterpillars. Accurate aiming can be made easier with the aid of our Nema Super Sprayer or Nema T-Pot but several applications may be required before results become apparent.

I hope this helps but if you need any further assistance please don’t hesitate to reach out again and we’d be more than happy to help.

Kind regards,
Julian Ives [Director, Dragonfli]

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