Tropicals, Woody > Citrus > Citrus
Citrus
Citrus
| Family |
| Rutaceae |
| Genus |
| Citrus |
| Category |
| Tropicals, Woody |
| Type |
| Tree (evergreen), Shrub (evergreen) |
| USDA Hardiness Zone |
| 9 - 11 |
| Canadian Hardiness Zone |
| Requires cold season protection under glass. |
| RHS Hardiness Zone |
| H1c - H4 |
| Temperature (°C) |
| -10 - 10 |
| Temperature (°F) |
| 14 - 50 |
Photographs
Cultivars
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Description and Growing Information
Flowering Period
| General Description |
| Genus of plants that include lemon, lime, sweet orange, sour orange, tangerine, grapefruit, citron, and shaddock. |
| Pests |
| Xylella a bacterial disease is a serious threat to many horticultures crops due to its virulence and wide range of species it can infect. It can infect more than 560 species with wide ranging symptoms including leaf scorch, yellowing and scorching, wilt, branch and twig dieback and plant death. These symptoms can be identical to other symptoms such as drought and weather stress. Infected plants show symptoms within a few years after planting. |
| Bark/Stem Description |
| Many species have thorns. |
| Leaf Description |
| Leaves are oval-shaped. |
| Flower Description |
| Fragrant flowers usually have 4-5 petals. |
| Fruit Description |
| Fruit is a modified berry called hesperidium, with flesh divided into segments. The skin of the fruits are studded with oil glands. |
| Colour Description |
| Flowers are usually white. Leaves are medium to dark green. |
| Texture Description |
| Leaves are leathery and glossy. Fruit skin is leathery. |
| Notable Specimens |
| Centennial Conservatory, Thunder Bay, Ontario, Canada. |
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