4 Gardenia

GARDENIA JASMINOIDES, ZONES 8 TO 11

Gardenias need a bit more care than some houseplants, but you will be rewarded with striking white flowers against dark foliage. Give them bright sun at least six hours a day and grow in moist, acidic soil.

Why we love it: The waxy, sweetly perfumed blooms make the extra fuss worthwhile. White Gem is a dwarf variety that’s perfect for growing in pots.