Help us achieve our goals:
make a donation »
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.
Eucalyptus is often affected by eucalyptus sucker. Although unsightly the damage caused is not usually serious and can be tolerated.
Eucalyptus sucker is a sap-sucking insect, also known as eucalyptus psyllid, that sucks sap on eucalyptus. They are similar in appearance to aphids and up to 2mm long, with grey and orange-yellow nymphs and darker adults. Both adults and nymphs can be found clustered on the shoot tips during the summer.
This Australian insect became established in Britain during the 1920s and is now of widespread occurrence in the UK on Eucalyptus species.
Infested shoots are usually sticky with honeydew and contaminated with sooty moulds. This insect overwinters as adult insects, they lay eggs on shoot tips from February onwards. There are two or three generations a year.
The damage this insect causes is usually only minor and treatment is not usually necessary. This is fortunate as large trees cannot be effectively treated.
Pesticides for gardeners (Adobe Acrobat pdf document outlining pesticides available to gardeners)
Alder suckerBay sucker Box sucker Elaeagnus sucker Eucalyptus Eucalyptus gall wasp Pittosporum suckerRHS statement on pesticides in horticulture
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.
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