Arp

Arp is a cold-hardy rosemary cultivar discovered in the 1970s near Arp, Texas, and introduced by horticulturist Madalene Hill. It is prized as one of the most winter-tough upright rosemaries, reliably surviving to roughly USDA zone 6 where most rosemary fails. Plants grow into loose, open, upright shrubs reaching 3 to 4 feet, with lighter gray-green foliage than many types. The resinous leaves carry a strong pine-and-lemon note that makes Arp a favorite for seasoning roasted meats, breads, and vegetables. Because of its hardiness, gardeners in colder regions grow it as a landscape perennial and culinary staple rather than an annual. It is a reliable, disease-resistant plant well suited to permaculture herb layers and pollinator plantings.