To continue the privet hedge we already have, we bought some 'whips' - little privet plants, thinned these out, and planted them in a zig-zag line. This was about this time last year. After a year, they're doing rather well and vigorously sprouting.
The thing is, we heard that you should cut them off to about a foot in length
, so that they sprout even more vigorously and get on with making themselves into a hedge. Is this true? If so, when would be a good time to do this? What's the view of the Gardeners' Question Time panel?