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Spurge (euphorbia polychroma) is a perennial with brilliant yellow flowers, which are actually bracts. It is sometimes referred to as cushion spurge because of its compact growing habits. Mature plants grow to a height of approximately 12 to 18 inches, and almost as wide.
In this regard, how big do euphorbia grow?
Grows to tree size (16 ft.) Euphorbia milii, "Crown of Thorns"—Thorny, bushy plant that loves warm, wet weather. Bracts in shades of red, yellow, orange and white will open throughout the year. Grows to 6 feet high by 5 ft.
Moreover, is spurge annual or perennial?
All there is to know about the spurge Practically the only thing they share in common is the sap which is highly irritant and poisonous. The plant can be a perennial, an annual, a biennial and sometimes grows as big as a shrub.
Woody Euphorbia Pruning Mediterranean spurge, which can grow 3 to 4 feet tall and wide, can be cut back to the woody framework of stems or the ground every year after they bloom. New shoots are often already forming at the base of the plant when old stems yellow, so clip carefully.