By Pattison
United Kingdom 
My son has a chalk cliff behind his house. It is about 40' high, top vertical and bottom half at 45 degrees, mixed thin soil and chalk. Can you suggest what ground cover he could use to help stabilise the slope, look attractive and encourage wild life.
27 Jul, 2013
Wild flowers might be his best bet for the steep slope - I can't think of anything for the vertical part! - the lime loving ones are often lovely, lots of blue ones and most attract bees. If you type Wild flowers chalk into Google you'll see several suppliers of both seeds and plugs.
The Royal Horticultural Society has a list of lime lovers of all sizes apps.rhs.org.uk › Gardening › Advice (I don't know why this hasn't appear as a link but if it doesn't work type in Shrubs Chalk and look at the RHS listing.) this will also suggest other plants for the foot of the cliff and the rest of the garden.
27 Jul, 2013