Saturday, September 23, 2017

Colchicum tessellation

Tessellation in Colchicum 'Beaconsfield'

Colchicum 'Rosy Dawn' a massive but untessellated cultivar.
The two images here show the difference between tessellated and untessellated flowers in colchicums. In the image of 'Beaconsfield' you can easily see the checkerboard pattern of the color. The intensity and clarity of this pattern varies with the age of the blossom and the light conditions. In addition to 'Beaconsfield', other cultivars which show this pattern well are 'Disraeli' 'The Giant' and 'Glory of Heemstede'. In 'Glory of Heemstede' the pattern is somewhat smudged but the overall color is very good. In 'The Giant',  overall the color is pale and so the tessellation is not distinct unless the blossom is examined closely.

For contrast, the lower image shows 'Rosy Dawn', an untessellated variety. Note the lack of the checkerboard color pattern. Grow this cultivar for its massive blooms: the outer tepals are more than an inch wide in well grown examples. 

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