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8 messages
17/06/2012 at 09:44

how do I get rid of them without necessarily using chemicals. Have googled and one site said use sunflower oil in a spray and must crush the adults and get rid of the larvae.

17/06/2012 at 09:51
I haven't tried the sunflower oil spray, but manual removal and extermination of the red adults and their unpleasant larvae is effective, though you have to be vigilant. And I would recommend using gloves to deal with the larvae which cover themselves with their own excrement. The adults tend to do a backwards flip when the plant is disturbed, landing on their backs and exposing their black bellies, which makes them difficult to see. Some people suggest putting a sheet of White paper under the plant so the bugs remain visible. Don't forget to check other vulnerable plants like fritillaries.
17/06/2012 at 10:36

thank you so much , have just checked and had to kill some more so will keep checking.

17/06/2012 at 10:54

Check under the leaves, too, for their eggs (laid in batches of 20 or so).  Those are also bright red and can easily be rubbed off - much less messy than dealing with the larvae!

17/06/2012 at 11:53

thank you

never had them before and where do they come from as the lily affected have had for years - did see that some times they come in compost but have only added bark to the area - could they have been in there then.?

 

 

17/06/2012 at 13:16

Like most beetles, they can fly and are attracted by the smell of lily plants.  They are an invasive species which are not native to the UK but are now extremely widespread here - so much so that some folk have actually given up growing lilies.  Keep a look out for them, especially when the sun is out, as it is then that they usually sit on the highest leaves and waft pheremones into the air to attract a mate.  If you want to read more about them, the RHS has a lot of info:

http://www.rhs.org.uk/science/plant-pests/lily-beetle

 

18/06/2012 at 14:21

thank you Bpb will go into the RHS link - have been squashing them and killing the larvae but will obviously have to do it daily. will also get some spray to eradicate them.

 

 

18/06/2012 at 15:06

Keep on squishing, and try the sunflower oil trick as it appears to have worked on mine.

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8 messages