The restored hedgerows will boost wildlife and help farm productivity, says the National Trust.
Five ponies arrive at the estate and will graze land as part of the trust's conservation efforts.
They are using tools and techniques similar to those originally used to construct the Iron Age home.
The rebuild of the building burnt down in a suspected arson attack is due to take about nine months.
Grain produced 19 miles away is being used to make the flour, using water-powered stone milling.
People contacting the BBC say NHS dentistry is one of their top priorities in the election.
The new parterre planting design will help it cope with "extreme weather conditions", says the charity.
The plan is the charity's largest tree planting project to date, aiming to "aid nature's recovery".
A private donor provides the money to buy the Thomas Hudson portrait for Wimpole Hall.
