Matthew Oates, a nature conservation adviser at the National Trust, said trees like the beech can turn early in dry areas.
Had it not been for him and his colleagues at the National Trust many old and historical buildings would have suffered.
Today, almost every county has at least one such mansion available, according to officials at the National Trust for Historic Preservation.
Peter Nixon, the director of conservation at the National Trust, said local people would not get enough say in developments.
Senior officials at the National Trust are to sit down with ministers to discuss amending controversial planning rules.
If you're looking for things to do with your little menaces over the school holidays take a look at the National Trust for Wales website.
He was accompanied by his page, a young man called Ben Cowell, who is assistant director of external policy at the National Trust.
Willington dovecote and stables at the National Trust.
Use the interactive map at the National Trust of Scotland website to find places of interest at which to stop.
Have a pop at the National Trust or the Labour Party if you want.