Open Gardens of Moreton Hall, now in its fourth year, will take place on Sunday (June 26).
The event is run by Coffee House owners Lucy Newell and Jessica Darnell as part of their efforts to raise funds for the Jacobs Allen Accumulator Challenge in aid of St Nicholas Hospice Care.
This year’s event will see at least 15 gardens on the Bury St Edmunds estate allow visitors to explore beyond their garden gates.
Bury waste guru and author of The Rubbish Diet, Karen Cannard, is among those taking part.
She will be giving free advice on composting, while other gardens will be hosting cake stalls to raise additional charity funds.
Tickets cost £5 each, with all proceeds going to the hospice.
The event will take place from 10am-4pm, starting at the Coffee House, in Lawson Place, where Hedgehog Plants and Gardens, of Risby, will be selling plants and Enspire – Gift Home and Garden will have garden furniture on sale.
Lucy said: “It’s going to be really exciting, bigger and better than all our other ones. It’s great that it’s become an annual community event and that the people of Moreton Hall love it so much.”