Hot-water Treatment of Daffodil Bulbs

Hot-water treatment (HWT) is used to manage stem nematode and basal rot in daffodil bulbs. Bulbs are usually immersed in water containing disinfectant and fungicide and maintained at 44.4°C for three hours.

This factsheet reviews the HWT process and discusses how bulb growers can use HWT to continue safeguarding the health of bulb stocks.

This information was last updated in 2013.