Someone i know had four large Rhododendrons in her front garden, and i
mean large! They fill up the whole of the front garden and the trunks
are massive.
Anyway, she got a gardener to prune them back about 2 years ago,
unfortunately he only pruned them down to about 5 foot and of course
they have sprouted about 4 shoots ate every cut! They are now about 8 -
10 foot tall and about to flower so i suggested she pruned them after
flowering.
However I am not sure how best this should be tackled. Do you take them
down to about four foot and thin the shoots to one at each joint or cut
them down even harder than before but keep on top of them by rubbing out
unwanted shoots.?

Janet
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Janet Tweedy
Dalmatian Telegraph
http://www.lancedal.demon.co.uk