Eric Robson and the panel are garden trouble-shooting at Malvern Spring Gardening Show. Bob Flowerdew, Matthew Wilson and Pippa Greenwood form this week's panel of experts.

Questions answered in the programme:
What gardening gadget would members of the panel not be without?
How do I dilute comfrey fertiliser? Does it benefit all plants?
Do members of the panel have a place for alpine plants in their garden?
The panel grow Sedum acre and Semprevivums 'Rubin' alpines amongst others.
How do you prune grasses?
Can I grow tropical fruits in a polytunnel in Herefordshire without heat?
Is my 100ft x 50ft garden big enough for a Catalpa tree?
Alternative trees suggested: Zelkova, flowering cherries, Paulownia 'Floxglove tree'

Suggestions for cut-and-come-again crops for an Edible garden please.
The panel suggest lettuce, chards, spinaches, Pueraria oy' Kudzu vine', and raspberries.

Produced by Howard Shannon and Lucy Dichmont
A Somethin' Else production for BBC Radio 4. Show less