Using common property for your own garden

Recently we received a notice from the Owners Corporation stating that we were in breach of the  by-law related to ‘damage to lawns and plants on common property’ which states that ‘an owner or occupier of a lot must not (b) use for his or her own purpose as a garden any portion of the common property’.  So, what is the definition of ‘use’:
1. is it ‘use’ that prevents others from accessing the common property by way of locked gates, a fence?
2. is it ‘use’ by digging the ground and growing plants that prevent others from walking across the common property?
3. is it both or something else?

Thanks.