These are the granddaddy of the Euphorbia family. It’s one of the most easily recognizable plants with it’s rounded shape, grey leaves and acid lime green flower bracts produced in the late spring/early summer.
The care thing
Prefers a sunny spot. It is very of drought tolerant. Each stem’s biennial so it’s leaves first year, flowers the second. Once flowered cut the stem back to it’s base so you’ll get new, fresh shoots.
The bad thing
It’s milky sap is an irritant. It can sometimes look very big and ugly if squashed into too small a space. Give the plant some room!