Add Yahoo as a preferred source to see more of our stories on Google. The crown of thorns is a striking houseplant with bright green foliage and tiny flowers enclosed with bright bracts of pink, red, ...
Crown of thorns grows best outdoors as a perennial in warm zones 9 through 11. Grow it indoors in other zones by placing it in a sunny window with at least three to four hours of direct sunlight in ...
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