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
Join the RHS today and support our charity
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.
The small whitish oleander scale can infest a variety glasshouse plants, including oleander, dracaena, palms and ornamental asparagus.
Oleander scale is a sap sucking true bug that appears as a flat, oval, whitish-brown insects on leaves and stems of glasshouse plants. The whitish covering of the insect is waxy and repels liquids. The adults reach up to 2mm long, the immature stages (crawlers) are much smaller.
It does not produce honeydew and breeds throughout the year.
Infestations of oleander scale are characterised by the encrustations of the 2mm diameter scales on leaves and stems of glasshouse plants. Common host plants include Acacia, Asparagus plumosus, azalea (Rhododendron), Cyclamen, Dracaena, Nerium oleander (oleander) and palms. Heavily infested plants can lack vigour. It can appear similar to other diaspid scale insects
Oleander scale is difficult to control. Although scraping the insects off the leaves can help reduce infestations this is unlikely to give good control. It can be worth considering replacing heavily infested plants.
Oleander scale can be difficult to control with sprays as the waxy covering gives them some protection and the best results are achieved by spraying against the newly hatched crawlers. Heavily infested plants may need several applications.
Pesticides for gardeners (Adobe Acrobat pdf document outlining pesticides available to gardeners)
Beech scale Brown scale Cushion scale Diaspid scale Euonymus scale Fluted scale Hemispherical scaleHorse chestnut scale Hydrangea scale Juniper scale Mealybug Mussel scale Oleander RHS statement on pesticides in horticulture Scale insects Scurfy rose scale Soft scale Viburnum scale Wisteria scaleYew 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.
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