Periwinkle-blue or white blossoms provide color from summer until frost with smooth or hairy leaves, 2–4 inches long; grows up to 5 feet high; easily grown in dry to medium-wet soil in full sun; hardy to -20 degrees F;Zones 5 to 9
Twice-monthly advice for bringing your home outdoors, from year-round yard upkeep and planning to the wonders of making your garden grow, plus special offers.
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