A unique hybrid between Washington Navel Orange and Poncirus, Troyer citrus is much more cold hardy than a Washington Navel Orange but not quite as sweet. Flavor is tart like a lemon with enough sugar in it to make it edible for the cold hardy citrus die hards. Has proven hardy to at least 5º F. and possibly lower once established. An excellent citrus hybrid to add to the list of those that can be grown outdoors here.
Click here to view our Citrus Growing Guide.
Latin Name: Citrus hybrid
Site and Soil: In spring, summer and fall, keep your potted Citrus in a location with 1/2 day to full sun. In the winter, place your plant in a well-lit room. Potting soil should be coarse, acidic, and well-drained.
Rootstock Description: Self-rooted
Pollination Requirements: Self-fertile. You can help it set fruit by taking a small brush and moving pollen from flower to flower.
Hardiness: Hardy to about 5-10° F
Bearing Age: 1-2 years after planting
Size at Maturity: 5-10 ft.
Taste: Tart with slight sweetness
Fruit Skin: Orange
Fruit Flesh: Orange
Bloom Time: Winter and spring
Ripening Time: Winter to early spring.
Yield: 20+ fruit
Care: Fertilize with citrus mix 3-4 times per year with typical applications in late winter (Jan-Feb), late spring (May-June) and early fall (Sept-Oct).
Pests & Diseases: While outside, Citrus plants will likely not be bothered by insect pests. Be on the lookout for slugs. Indoors, Citrus can have mites and/or aphids. Watch carefully for any problems and treat with an insecticidal soap or wash them off. We have not seen any disease problems on our Citrus plants.
USDA Zone: 8, possibly 7