Is it a gardenia or an azalea? No, it's not a bigeneric hybrid. This one is 100% azalea, but the flowers do look like those of double gardenias...and it's cold hardy to Zone 6! In mid spring the 'Hardy Gardenia' Azalea is covered in stunning clusters of lightly-scented white flowers with double petals that surround a blotch of chartreuse freckles at the center. Dark green glossy evergreen foliage really makes the flowers pop. Growing only 3 feet tall and equally as wide makes this beauty a perfect fit for smaller garden spaces or groupings in larger landscape borders. Get all the details below!