Head gardener Philip Whaites is urging his male colleagues to pee on the straw bale to activate the composting process on the estate's compost heap.
He said the "pee bale" is only in use out of visitor hours, since "we don't want to scare the public".
"There are obvious logistical benefits to limiting it to male members of the team, but also male pee is preferable to women's, as the male stuff is apparently less acidic."
"Adding a little pee just helps get it all going; it's totally safe and a bit of fun too."
As David Wilcox sang some 30 years ago,
Do it in the country they like it just fine Do it in the city it’s a $20 fine Hot hot papa