What is a group of Hazels called?

A group of hazels is commonly called a Copse.

A collective noun for hazels is a grove. A grove often refers to a group or a small cluster of hazel trees growing closely together. In this picturesque setting, the hazel trees create a harmonious and natural environment, forming a cohesive unit in which the hazels thrive in unison. Each hazel tree contributes to the collective energy and beauty of the grove, enhancing its overall charm. The grove is a celebration of the hazel trees' interconnectedness and shared characteristics. It presents an enchanting and peaceful scene, tempting all who stumble upon it to take a moment to appreciate the wonders of nature. Whether casting dappled shadows on the forest floor or sheltering a variety of woodland creatures, a grove captures the delicate balance of life within a lush and wholesome hazel community.