Gardens and parks, managed by the National Trust and the Royal Horticultural Society, will reopen next week as rules around lockdown begin to ease.
The National Trust will begin a phased reopening of 29 of its sites from June 3, including four in the East of England.
Anglesey Abbey, Cambridgeshire
Sutton Hoo, Suffolk
Wimpole Estate, Cambridgeshire
Visitors will need to book online first to limit entry numbers and keep the public safe.
The Trust said it will open its gardens and open spaces to around a third of the normal number of visitors at any one time.
“We want to provide safe, local, welcoming spaces for people, and wherever possible we will open our gardens and parks, and coast and countryside car parks", said Director General Hilary McGrady.
“The fresh air, bird song, big skies and open spaces people have missed will be there, but things will be very different, particularly at first.
"We want to thank people for their patience and support while we gradually begin reopening and welcoming our visitors.”
Meanwhile, The Royal Horticultural Society has announced it will reopen its four gardens across England from June 1, following the latest government advice on coronavirus.
Social distancing measures will be in place at all venues including Hyde Hall Garden near Chelmsford.
Visitors will also need to book tickets in advance and follow health and safety measures including:
Strictly limited numbers of pre-booked tickets available for each day
Restrictions on the number of customers allowed to shop at any one time, and a maximum of two people per household allowed into the Garden Centre together
Separate entry and exit points to the Gardens and Garden Centres where possible
Floor markings to indicate appropriate distances while queueing in the Garden Centres and the Garden entrances
Screens at the welcome desks and checkouts to protect staff
Hand sanitiser available to staff and visitors at strategic points
Card transactions only – no cash payments
The charity says it will continue to monitor the coronavirus guidelines when it opens its doors again.
“We are delighted that the Government has said it is safe to reopen our RHS Gardens because it is proven that spending time outside in green open spaces surrounded by plants has an immensely positive effect on our health", Sue Biggs, RHS Director General said.
“We look forward to welcoming our members and visitors safely back from June 1st and to bringing the joy of plants, flowers, trees and nature back into people’s lives, which for so many will be a much needed tonic.
“We will of course be operating at a limited capacity and will have measures in place to ensure that all safety guidelines are followed because our number one priority is to support the Government’s efforts to limit the spread of the virus."