Ken looks at what Cabbage White butterfly caterpillars can do to a plant.
Ken talks to the Sun newspaper columnist, Steve Bradley about some common pests and diseases.
Ken looks at the caterpillars of the Cabbage White butterfly and offers some tips on how to deal with this pest.
Ken looks at how to deal with aphids on Lupins.
We got lots of emails to World Radio Gardening. In this programme Ken Crowther answers your questions. If you have a question you can email firstname.lastname@example.org