Q.amorphophallus kon jac vodo lilly
my husband has a vodo lilly but for the last few years it has been only producing the ferns I would like to know why can you help me
It might be that the plant is not yet mature. If however the plant has flowered in the past, it may be that it doesn't currently have optimal nutrition for flowering. Try increasing the amount of phosphorus by adding bone meal or other phosphorus fertilizers. Too much nitrogen fertilizer can also inhibit flowering.
https://www.gardeningknowhow.com/plant-problems/environmental/plant-not-blooming.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/bone-meal-fertilizer.htm