Lesser Celandine Lesser Celandine is a short perennial wildflower which grows quickly from mid-April and tolerates a wide range of conditions. It is in the buttercup family, and though it shares its name with Greater Celandine they are not related as the latter is in the poppy family. In May it has bright yellow flowers after which the leaves go yellow and the plant dies back. When it is uprooted you can see little nodes which fall off readily and create a new plant. Though it is a spreader it is easy to control if you want, either hoe it off before it gets too big or fork out the plants individually, making sure you get all the nodes. Do not add it to the compost heap.