Among the very first of the citranges, Citrus 'Rusk' dates to 1897, when Walter Swingle crossed a Ruby orange with the tough, cold-hardy trifoliate orange, Poncirus trifoliata, in the great effort to breed citrus that could take a freeze. The result is a vigorous, tall-growing, notably hardy tree, evergreen to semi-evergreen, and dense with the distinctive three-parted trifoliate leaves.
Woodlanders has long led in offering citrus and citrus hybrids hardy well beyond the usual citrus belt, and the Troyer citrange is a classic of the kind. A cross of the Washington navel orange and the inedible but iron-hardy trifoliate orange, Poncirus trifoliata, the Troyer was raised in 1909 under the direction of the great citrus breeder Walter Swingle, and later named for A. M. Troyer of Fairhope, Alabama, where the tree first bore fruit, a nice southern footnote for a hardy citrus.
Woodlanders has long led in offering citrus and citrus hybrids hardy well beyond the usual citrus belt, and U.S. 119 is one of the most refined of the group. A complex USDA hybrid, a citrumelo crossed back with a sweet orange, the tree runs one quarter trifoliate orange, one quarter grapefruit, and one half sweet orange, a pedigree chosen to keep the toughness of the trifoliate while pushing the fruit toward genuine quality.
US-942 began life as a rootstock, bred by the USDA and released in 2010 after years of Florida field trials, a careful cross of the Sunki mandarin and the curious Flying Dragon form of trifoliate orange, Poncirus trifoliata. As a rootstock the record is stellar: compact, productive trees, strong resistance to Phytophthora and tristeza virus, and better tolerance of citrus greening than most, which is why growers across the citrus belt have come to trust the number.
Among the more intriguing fruits in the Woodlanders citrus collection, the Gou Tou sour orange stands apart, not only for rarity but for a rare combination of hardiness, heavy fruiting, and surprisingly pleasant flavor. Widely cultivated in Southeast Asia, Citrus aurantium 'Gou Tou' carries the form of a traditional bitter orange but with a taste that leans toward grapefruit, which makes this one of the most palatable sour oranges a gardener outside the subtropics can grow.
The Yuzuquat is a tri-generic hybrid, a curiosity even among unusual citrus. One parent is the yuzu, itself a cross of Citrus ichangensis and Citrus reticulata; the other is the 'Nagami' kumquat, Fortunella margarita. From that three-way pedigree comes an attractive evergreen citrus that bears sour, juicy, lemon-like fruits about the size of a chicken egg.
Citrus myrtifolia 'Chinotto' is the myrtle-leaf orange, a small, dense, thornless citrus grown as much for beauty as for fruit. The tidy branches carry little pointed leaves like a myrtle's, sweetly fragrant white flowers, and a long-held crop of small, round, bitter oranges. Compact and slow, the chinotto makes an exceptional container or patio plant, an evergreen jewel that flowers and fruits at an easy, manageable size.
NuClem is a special clementine among the cold-hardy citrus, a nucellar selection of the familiar clementine mandarin. Our friend and citrus guru Tom McClendon, who shared this one with us, explains it best: "NuClem is a nucellar Clementine, meaning that it comes true from seed. Most Clementines are polyembryonic, meaning that seeds will almost always produce hybrids with other citrus nearby. NuClem also is distinctive in its cold-hardiness, having proven reliably hardy in Montezuma, GA, making it probably on par with Satsuma. Fruit is globular, about two inches in diameter, with a mildly adherent peel more like an orange than a mandarin. Fruit quality is excellent."
The Meyer lemon is the great container citrus, beloved for thin-skinned, deep yellow-orange fruit that is sweeter and less acidic than a true lemon, and for fragrant, purple-tinged white flowers that come more than once a year. A small evergreen tree, the Meyer is thought to be a natural hybrid of lemon and some other citrus, probably a sweet orange or mandarin, which accounts for the mellow, almost floral flavor that has made the fruit a favorite of cooks.
This elegant small tree carries a graceful, vase-shaped habit that rounds out with age. Blooming two to three weeks after Cornus florida, the kousa dogwood opens striking, pointed flower bracts in late spring to early summer, extending the dogwood season. The bracts surround clusters of tiny true flowers in a star-like display that sets this dogwood apart.
This Chinese dogwood is a spreading, small to medium deciduous tree with clean foliage and showy white-bracted flowers. Unlike the native American flowering dogwood, the bracts are sharply pointed. The tree flowers about a month later than Cornus florida, and is apparently immune or resistant to some of the disease problems that trouble Cornus florida in certain areas. A fine ornamental for an open, semi-shady lawn or border.
This spiny, sprawling, half-vining shrub carries glossy evergreen leaves and a tangle of thorns. Sometimes classified as a Maclura and related to the native Osage orange, cockspur thorn ranges widely across eastern Asia and south to Australia, yet stays rare and little known in North America, familiar mostly to a few bonsai enthusiasts.
Hardiness
Zones 7–9
Light
Full Sun / Part Shade
Height
6–8 ft.
Spread
15–30 ft.
Bloom
Green
Plant type
Shrub
Traditional use
detoxification & cleansing, respiratory support, pain relief, reproductive health
