The fires have been on farmland in areas around Newton Abbot, Teignmouth, Paignton and Dawlish.
All the incidents involved a number of fire crews attending the scenes for long periods of time.
Safety advice has now been issued to farmers on how to reduce the risk of arson, including preventing easy access and installing security.
New Lord Mayor’s pride in ‘thriving’ Exeter
'This is a city we can all be proud of'
Plymouth McDonald's wants 24/7 opening hours
"No notable complaints or issues" recorded in 10 years
Village’s only pub could close permanently
Owners of The Castle Inn at George Nympton have struggled to sell it
Government grant helps kick-start Oldway Mansion repairs
This helps us move ever closer to restoring Oldway'
Devon plant firm digs in over land row
Sign erected
Torquay father’s concern as son held by Israeli forces
Elliott Roberts was skippering a yacht in Gaza aid flotilla
