Join the RHS today and support our charitable work
Keep track of your plants with reminders & care tips – all to help you grow successfully
RHS members get reduced ticket prices
RHS members get free access to RHS Gardens
Free entry to RHS members at selected times »
Reduced prices on RHS Garden courses and workshops
020 3176 5800
Mon – Fri | 9am – 5pm
Help us achieve our goals
Join the RHS today and support our charity
Brown scale is a sap-sucking insect that evidence of which can be found on woody plants at any time of year, partly because old dead scales remain attached to the bark.
Brown scale on cotoneaster. Credit: RHS/Science.
There are many types of scale insects encountered by gardeners, they are sap sucking true bugs. Brown scale lives primarily on stems and is found on a wide range of woody plants.
Light infestations are of little consequence and can be tolerated, but heavy attacks are best dealt with in early to mid-summer when the more vulnerable newly-hatched scales are present.
Adult scale can be removed when seen but this may not reduce heavy infestations.
Pesticides for gardeners (Adobe Acrobat pdf document outlining pesticides available to gardeners)
Chemical labels explained
Chemicals: using a sprayer
Chemicals: using safely and effectively
Cotton stringy scale
Horse chestnut scale
Woolly vine or currant scale
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.
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.