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Species & Hybrids
This page is presented by Society Vice Chairman Jeff Rhodes.

Species
Species are botanical plants that grow naturally. When a species begonia is crossed with another of the same variety the resulting plants will come true.
Hybrids
Hybrids are the result of crossing two different varieties. The only way to reproduce a hybrid is by vegetative means.

Rex Cultorum

All plants of the Rex Cultorum group of begonias are hybrids. Most are rhizomatous. They are grown primarily for their ornamental foliage. Leaves come in numerous colours and patterns, and various metallic sheens, together with a variety of leaf surfaces and textures. Leaf size can be anything from under 3 up to 12 or more. Whilst the rex Cultorum group do produce flowers, these are insignificant.

To produce the most colourful foliage it is essential that they receive the exact amount of light. Heavily filtered light and no direct sunlight is the norm. Preferably a daytime temperature of 70F, a little lower at night. Try to avoid sudden changes in temperature.  Some varieties will become dormant or semi-dormant during winter if the temperature drops too low. If so, watering should be reduced. Humidity is important, but the range between different varieties is large. More trial and error.

Watering is crucial with rex begonias; they need to be moist but not wet. Over watering will lead to rot on leaves and rhizomes
Feed regularly to give the best colour to the foliage.

B.'benitochiba'

An attractive hybrid, being a cross from B.`Filigree` x B.luxurians. Rex.  Upright-stemmed, medium leaved. Flowers are reddish-pink produced in late summer. It was Introduced 1973 by Misono in Japan. It needs a bit of T.L.C to keep it looking nice. It can be a bit touchy in hot and humid conditions.  There is a similar cultivar listed as B.`Benichoma`  This is possibly due to a miss-spelling.

Cane like      Rhizomatous      Shrub-like      Tuberous / Semi tuberous      Thick stemmed
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