Sourced originally from the noted citrus enthusiast Tom McClendon, Citrumelo 'Dallas' is a cold-hardy hybrid between the rugged trifoliate orange, Poncirus trifoliata, and a grapefruit. From that unlikely pairing comes a vigorous small tree that carries the trifoliate's toughness and a good measure of grapefruit character in the fruit.
Citrumelo 'Dunstan' is a hardy heirloom hybrid of the rugged trifoliate orange, Citrus trifoliata, and the sunlit grapefruit, Citrus paradisi, and from that unlikely marriage comes a fruit and tree of real merit. The golden-yellow globes swell to nearly four inches across, fragrant, and, touched with sugar, carry the tart refreshment of a grapefruit picked a little shy of ripe. Here is fruit both rustic and refined, bred for survival yet still hinting at the orchard.
Woodlanders has long led in offering citrus and citrus hybrids hardy well beyond the usual citrus belt, and the Morton citrange is a handsome one. Like other sweet orange and trifoliate orange crosses, Morton makes an attractive ornamental evergreen, with fragrant white spring flowers and orange fruit, but the fruit here sets the cultivar apart: large, smooth-skinned, and remarkably like a true orange, with very few seeds.
A very old Chinese cultivar, almost certainly named for the capital of Hunan province where the fruit has been grown for centuries, and quite possibly carrying C. ichangensis somewhere in the parentage. That suspected ancestry would account for the cold tolerance that has made Changsha the parent stock for nearly every modern hardy citrus breeding program of consequence: Wayne Hanna's seedless work at UGA Tifton, the Arctic Frost satsuma cross out of Texas, and others still in trial.
Woodlanders has long led in offering citrus and citrus hybrids hardy well beyond the usual citrus belt, and the Keraji mandarin is a favorite of the group. A medium-sized evergreen tree with the usual fragrant white citrus flowers, Keraji follows them with what Tom McClendon, in Hardy Citrus for the Southeast, calls "small, yellow, flattened tangerines that have a sweet lemonade taste unlike any other citrus fruits." That flavor is the whole reason to grow the tree, and Keraji has proven quite hardy in Augusta, Georgia since 1997.
Woodlanders has long led in offering citrus and citrus hybrids hardy well beyond the usual citrus belt, and Citrus taiwanica is one of the tougher evergreens of the group. A vigorous, upright, spreading, thorny tree, the Taiwan orange bears sour tangerine-to-orange fruit that is both ornamental and useful, the base of a very tasty ade. One of the hardier evergreen citrus, the tree sets good crops here in Aiken, South Carolina.
Every grafted citrus tree is two plants pretending to be one: a familiar fruiting top, and a rootstock below the graft union doing the unglamorous work of roots, vigor, and disease resistance. US-1516 is one of the latter, and a good story all the same. The cross was made by the USDA in 1975, a pairing of opposites: African pummelo, the giant of the genus, crossed with Flying Dragon, the contorted, fiercely thorned, cold-hardy form of trifoliate orange (Poncirus trifoliata) that lends so many hardy citrus their backbone. The seedlings went into the ground at the Whitmore farm in Groveland, Florida in 1976 and then, in the patient way of tree breeding, were watched for forty years. Kim Bowman's program at the USDA lab in Fort Pierce released them at last in 2015, into the worst of the huanglongbing epidemic, the bacterial greening disease that has hollowed out Florida's groves. On infected ground they keep their grafted tops healthier and more productive than the old standbys. We offer them ungrafted, which is an unusual thing to sell and an honest one: this is a tree for the cold-hardy citrus tinkerer, the person who wants to practice budding, raise their own understock, or simply grow the trifoliate-blooded foundation and see how far north the plant will go. They come nearly true from seed, vigorous and uniform, and they ask only that you have plans for them. Graft them bold, or just let them teach you the lower half of the tree.
The limequat was born of catastrophe. After the twin freezes of 1894 and 1895 laid waste to Florida's groves, Walter T. Swingle of the United States Department of Agriculture set out to breed citrus that could shrug off a cold snap, and in 1909 he crossed the sharp little West Indian or Key lime (Citrus aurantifolia) with the round Marumi kumquat (Fortunella japonica). Named and introduced in 1913 alongside a sister seedling called Lakeland, the Eustis limequat stands among the first successful intergeneric citrus hybrids, living proof that two separate genera could be wedded and still bear generous fruit.
The Sunquat began as an accident in a Beeville, Texas dooryard in the early 1940s, when a man named Leslie Cude noticed a seedling carrying fruit that looked like a small lemon and behaved like a kumquat. Walter Swingle, the great citrus authority of the day, took one look and guessed a cross of Meyer lemon and kumquat, which is where the name Lemonquat comes from and how it entered the collections as Citrus limon × Fortunella. The trouble is that the curators who have kept the tree at Riverside ever since have come to doubt him. The fruit, they think, points to a mandarin somewhere in the parentage rather than a lemon, which would make the plant a mandarinquat wearing the wrong label. Nobody has settled the question. The plant has gone out as Sunquat, Lemonquat, Lemondrop, and Marmaladequat, four names for one tree, each a different theory and not one of them proven. Asking a citrus to hold still long enough to be classified rather misunderstands the family.
A cold-hardy citrus with a Woodlanders pedigree. Woodlanders has long led in offering citrus and citrus hybrids that stand outdoors beyond the usual citrus belt, and the calamandarin is one of the toughest. Likely a hybrid of a mandarin, Citrus reticulata, and a calamondin, the calamandarin blends easy-peeling, tangerine-like fruit with the cold tolerance that calamondin brings to the cross.
Woodlanders has long been a leader in offering citrus and citrus hybrids hardy well beyond the usual citrus belt, and the 'Razzlequat' is one of the odder and hardier of the lot. The plant is a cross between the Australian desert lime, Eremocitrus glauca, a tough, drought- and cold-tolerant native of the arid Australian interior, and, most likely, the familiar 'Meyer' lemon. From the desert lime parent come thorny, wiry branches, small narrow gray-green leaves, and a hardiness and drought tolerance rare among citrus; from the lemon come size and flavor.
The Ponderosa lemon is grown for spectacle as much as for the kitchen. The fruits are enormous, often two to four pounds each, thick-skinned and gloriously bumpy, hanging like green-gold cannonballs among the glossy leaves. For all the size, the flesh is tart, juicy, and true lemon in flavor, and works in any recipe a regular lemon would, with the novelty of a single fruit that can fill a hand.
The Rangpur is not truly a lime at all, but Indian gardeners have used the fruit as one for more than five hundred years. Citrus x limonia, an old natural hybrid of mandarin and citron, bears small, round, deep orange fruits that look like tangerines and taste fiercely sour, with the aromatic bite that makes a fine lime substitute for cooking, cocktails, and marmalade. In India the fruit goes by surkh nimboo, the red lime, prized for exactly that intense, tart juice.
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.
Named for Walter Tennyson Swingle, the pioneering citrus breeder who spent his career crossing tender oranges with the iron-hardy trifoliate orange, the Swingle citrumelo is among the toughest citrus hybrids ever raised. A cross of grapefruit, Citrus paradisi, and trifoliate orange, Poncirus trifoliata, this vigorous, thorny, semi-evergreen shrub or small tree carries fragrant white citrus blossoms in spring, followed by pear-shaped yellow fruits about the size of a large orange.
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.
Woodlanders has been a leader in offering a wide range of Citrus and Citrus hybrids which are hardy outdoors beyond the normal Citrus growing areas. This orange is actually an orange x tangelo hybrid. Tangelo is a grapefruit x mandarin hybrid. It was bred in Florida for cold hardiness but is not widely tested. It has however grown and been productive on the South Carolina coast. The fruit is said to be sweet and for marketing puroposes it is classified as an orange.
Woodlanders has been a leader in offering a wide range of Citrus and Citrus hybrids which are hardy outdoors beyond the normal Citrus growing areas. This hardy hybrid between the Naval Orange and the inedible but hardy Trifoliate Orange (Ponciris trifoliata)was created way back in 1909 under the direction of W.T. Swingle. It is now regarded as a sister seedling of 'Troyer' or it may indeed be the same as 'Troyer'. It is likewise a vigorous upright small tree with slender thorny branches, semi-evergreen foliage, white flowers, and abundant baseball size oranges that make a conversation piece plus a tasty and refreshing ade drink if juice is diluted and sweetened.
Woodlanders has been a leader in offering a wide range of Citrus and Citrus hybrids which are hardy outdoors beyond the normal Citrus growing areas. This hybrid between the Sour Orange and the Trifoliate Orange has great vigor and very nice foliage with mostly trifoliate leaves. Has flowered and fruited well in northern Alabama. This citrus is quite cold hardy but the plant with it's flowers and sizeable orange fruit may be better for show than anything else as Citradias are but not likely to very palatable.
