Two fires in the Busselton region ignited in last week’s hot weather with the first fire occurring at a Jindong farm.
The fire started in a hay shed creating a lot of smoke in the area and was monitored throughout the day as it continued to smoulder.
A Department of Fire and Emergency Services spokesperson said it was easy for anything not green to catch fire in summer.
WAFarmers executive officer policy Grady Powell said haystacks should have a decent firebreak around them to minimise the chance of a fire spreading.
He said fires could be caused by a range of factors, including contact with sparks from machinery.
Mr Powell said they could also spontaneously combust, which was usually caused by hot weather conditions in combination with excess moisture in the haystack.
”While regular monitoring of haystacks could prevent a fire breaking out, this is not always the case,” he said.
WAFarmers recommends farmers watch for signs of heating hay, such as steam rising, mould growth, unusual odours and slumping.