Join the RHS today and support our charity
Free personalised gardening advice
RHS members get reduced ticket prices
RHS members get free access to RHS Gardens
Reduced prices on RHS Garden courses and workshops
020 3176 5800
Mon – Fri | 9am – 5pm
Make a donation
I have forgotten my password
Keep me signed in
Register for free to receive our newsletters, add comments to blogs/articles and to save content.
See what events are on near you and browse your bookmarked pages.
Don’t miss out - book in advance and save
Box hedges and topiary are often affected by box sucker, although the damage caused is usually superficial.
Common name Box suckerScientific name Psylla buxiPlants affected Buxus sempervirensMain symptoms Leaves at the shoot tip are cupped. In late spring, flattened pale green insects and a white waxy substance are presentMost active April–early June
Box sucker is a sap-sucking insect, also known as box psyllid, that feeds at the shoot tips of box plants in spring.
Box can suffer from a number of other problems.
Damage from this insect is superficial and control is not usually necessary on established box hedges or topiary plants that are going to be clipped.
Regular clipping helps remove affected parts of the plant.
If damage is serious to plants that need to grow larger they can be sprayed with insecticide.
Pesticides for gardeners (Adobe Acrobat pdf document outlining pesticides available to gardeners)
Alder sucker BoxBox blightBox problemsBox tree caterpillarBrown leaves on woody plantsChemical labels explained Chemicals: using a sprayer Chemicals: using safely and effectively Ealeagnus sucker Hedges: plantingRHS research into box blightRHS statement on pesticides in horticulturePittosporum suckerScale insectWaterlogging
the RHS today and get 12 months for the price of 9
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
Register for the site or sign in to share your experiences on this topic and seek advice from our community of gardeners.
plockton on 19/04/2015
good morning everybody, we have few attacks on Buxus this month in France (south west). we use organic deltamethrin to fight it. Our major problem is the Glyphodes Perspectalis, a caterpillar which cause damages on buxus.
Eninaj on 20/04/2015
Bonjour - I live in the south east of France (Nice) and will now look at the buxus I've planted here. Hope you can solve your caterpillar problem. This disease affecting buxus is a huge problem in other parts of Europe but I've not heard of it here so far (fingers crossed). Does the organic deltamethrin seem to be doing the trick?
plockton on 20/04/2015
bonjour, good evening, organic deltamethrin is a good tool to fight differents pests on buxus even though the "bacillus thuringiensis" is the best solution to fight caterpillars. Traps with pheromones are really effectives.
We're a UK charity established to share the best in gardening. We want to enrich everyone's life through plants, and make the UK a greener and more beautiful place.
Join the RHS today and get 12 months for the price of 9