How to grow cistus, irises and wage war on vine weevil, by garden expert Helen Yemm

Cistus x purpureus  Alan Fradd 
Cistus x purpureus 'Alan Fradd'  Credit: Chris Burrows / Getty

Every week, Telegraph gardening expert Helen Yemm gives tips and advice on all your gardening problems whether at home or on the allotment. If you have a question, see below for how to contact her.


I have a four-year-old white Cistus x cyprius. For the past two years, after flowering, many leaves have drooped, browned and dropped and the plant needs a lot of TLC to keep it going. I know cistuses have a limited lifespan, but is there anything I can do 
to rescue it?

Chris Lee – via email

It is difficult to diagnose problems such as this without knowing a bit more about where this shrub is sited and the kind of soil conditions it is dealing with. As with all other “Mediterranean” plants, it...

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