Firefighters have extinguished a fire at a Waimanalo nursery.

When they arrived at Sharon’s Plants, 41-614 Waikupanaha St., they discovered a 2,000-square-foot, two-story warehouse fully involved in flames, said fire Capt. David Jenkins.

The first alarm was at 1:53 p.m. and the first unit was on scene at 2 p.m. The blaze was quickly brought under control by 2:13 p.m., and the second alarm was canceled.

It was extinguished just before 4 p.m., officials said.

Fire officials were informed that several gallons of chemicals, including pesticides and fertilizer, were inside the warehouse.

A hazardous materials unit was called in to check air and water quality, and to contain the runoff, which may contain chemicals.

No one was in the building at the time and there were no injuries.

The cause is under investigation.