March 20
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Plant Species of the genus Celtis

Information about this genus
Name: Celtis
Cultivation: CULTIVATION: They are mostly vigorous growers that adapt well to tough environments such as urban streets and parks, tolerating a wide range of soil conditions. The deciduous species make fine shade trees, needing little or no shaping and maintenance. Propagate from seed, which in the case of temperate species should be cold-stratified for 2 to 3 months before sowing in spring; germination is often erratic.
Description: Gardeners and naturalists familiar with the deciduous nettle-trees of Europe and temperate Asia, or with the hackberries of North America, often do not realize that these are outlying members of the large, mainly tropical and mainly evergreen genus Celtis, consisting of over 100 species occurring in all continents and many larger islands. Belonging to the elm family, the genus shares with Ulmus the characteristic leaf shape with usually toothed margins and asymmetric base. Each leaf has 2 stipules attached where it joins the twig and in some of the evergreen species these are modified into spines. Flowers are greenish and inconspicuous with male and female separate but on the one tree, and are followed by small berry-like fruit with thin but sugary flesh concealing a hard stone; in most species they ripen to black or dark brown. The fruits are greedily eaten by birds such as pigeons, which effectively disperse the seeds through their droppings. Some species have become troublesome weed trees when cultivated outside their native lands.

Specie Vernacular Zone
Celtis africana 8?12
Celtis australis 8?11
Celtis glabrata 8?10
Celtis paniculata 9?12
Celtis philippensis 10?12
Celtis reticulata 6?10
Celtis sinensis 8?12
laevigata 6?11
occidentalis 3?10
tenuifolia 5?9

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