Beekeepers in Victoria have had to buy feed for their hives because trees are not flowering enough.

Summer is the peak time for honey production, but beekeepers say a lack of spring rain has led to their worst season in 50 years.

The president of the Central Victorian Apiarists group, Ken Gell, says his bees are producing barely any honey.

He says buying food for bees in summer is a first.

"We've even got some beekeepers at the moment feeding bees, that's how bad it is," he said.

"Feeding bees in the middle of summertime is just about unheard of.

"Sometimes you've got to do it in the springtime, coming out of winter and maybe some would have to do it in the autumn going into winter, but never right in the middle of the season."

He says some beekeepers are considering taking second jobs because they are not producing enough honey.

He says trees are not flowering enough because of low rainfall in spring.

"I think it's just the extended dry spell," he said.

"We usually get thunderstorms, just showers of rain through springtime and even during summertime we get some rainfalls which help things grow and put buds on for us but this season, just nothing's worked."