Sunday , November 19 2017
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Kumquat

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If you are looking to grow a plant that is both: a decorative object and a food source, and you live in a warm climate, you may want to consider the kumquat. It offers an attractive plant and delicious fruit all in one evergreen tree. You can also grow kumquats indoor, in pots, if you live in a colder area. If grown in pots, they must be dwarfed, not be allowed to become pot-bound and need faithful watering to avoid dehydration and regular feeding.

The kumquats are much hardier than other citrus trees. They require a hot summer, with temperatures ranging from 25 to 38 Celsius degrees (77 to 100.4 F), but can withstand frosts down to about -10 Celsius degrees (14 F) without injury. The trees also differ from other Citrus species in that they enter into a period of winter dormancy so profound that they will remain through several weeks of subsequent warm weather without putting out new shoots or blossoms. Despite their ability to survive low temperatures, the kumquat trees grow better and produce larger and sweeter fruits in warmer regions.

Kumquats are rarely grown from seeds as they do not do well on their own roots. They are grafted onto the trifoliate orange (Poncirus trifoliata). This has been found the best rootstock for kumquats and for dwarfing for pot culture. For this reason they are often known as “Dwarf Fruit”. Sour orange and grapefruit are also suitable rootstocks. Rough lemon is unsatisfactory in moist soils and tends to be too vigorous for the slow-growing kumquats.

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Sweet Orange

Sweet Orange (Citrus sinensis) is a compact, evergreen tree, grown for its edible fruits. It  can grow up to 9 m tall and 7.5 m wide and might tolerate some light frosts. It is probably the most popular of all citrus trees. The leaves are elliptical to oblong-ovate, up to 10 cm long, with narrowly-winged petioles. The flowers are white, sweetly scented, hermaphrodite - have both male and female organs and appear in clusters at the tips of the branches. The plant is self-fertile. The fruits are round or ovoid, orange to reddish-orange in color. The juicy flesh is orange and fairly acid and can contain few or many seeds.

If you live in a cold area you can grow sweet orange trees in a greenhouse or indoors, as they make excellent container plants because their size can be easily controlled with container size and selective pruning.

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