The Heath Garden is a series of beds bordered by peat bricks in the highest part of the Botanical Garden, on top of the old bastion.
The garden was founded in 2006 for plants of the Ericaceae family. These only grow in the presence of acidophilic mycorrhizal fungi that extract nutrients and water for the plants from the soil and protect their roots.
The Heath Garden is home to evergreen shrubs, rhododendrons, many varieties of heather and heath as well as other moorland plants from North America, Europe and even the mountains of Africa.