Should I cut the entire stalk once the flower is spent? Or just the flower?
Certified GKH Gardening Expert
If you want to be perfect about it, you should cut it as it dies off... but cutting the entire stalk when the flower dies is the most common method, and will be fine here. This article will give you more information on their care: https://www.gardeningknowhow.com/ornamental/bulbs/crinum-lily/crinum-lilies.htm