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.
Broad bean seed beetle can be a problem in dry seed, it is most likely to be seen by gardeners who save their own seed.
Common name Broad bean seed beetleScientific name Bruchus rufimanusPlants affected Broad bean seedsSymptoms Circular emergence holes in dry bean seedsMost active March-July
The adult insect is a small beetle that belongs to a sub-family of beetles that are known as bruchid beetles, seed beetles or seed weevils. It is the larval stage feeding inside seeds that causes the damage.
Keep an eye out for the following symptoms or signs of broad bean seed beetle activity;
There is no control available to amateur gardeners. Fortunately, affected seeds will usually germinate as the grubs feed in the cotyledon part of the seed, most of which survives, and the seed embryo is undamaged.
Typically, the life cycle of broad bean seed beetles is as follows;
AphidsBlackflyBroad bean chocolate spotBroad beans: growingBroad bean rustPea and bean weevilsRunner and French bean rustRunner beansRunner beans: failure to set pods
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