KARAK, Malaysia (AP) — Malaysian durian orchard owner Stephen Chow’s workers spend hours in the fields in the dead of night, donning headlamps to collect freshly ripened fruit coveted by Chinese consumers. But the hard work may not be enough to keep Chow out of the red.

Durian lovers prize the Malaysian premium varieties such as Musang King and Black Thorn, but their growers face a harsher reality. Climate change, caused by the burning of oil, gas and coal, is making it costlier for growers like Chow to produce quality durians, adding pressure as they compete with Thailand and Vietnam, which dominate a booming export market to China.