This section is from the book "The Gardener V3", by William Thomson. Also available from Amazon: The New Organic Grower: A Master's Manual of Tools and Techniques for the Home and Market Gardener.
The leaves of your seedling Pelargoniums are much inferior to what are now in cultivation, and we doubt if they are likely to improve, as, judging from the freshness of the colouring and the texture of the leaves, they appear to be in their best character. The 'Gardeners' Chronicle ' once laid down the properties which ought to guide judges in estimating the qualities of these Pelargoniums in the following rules: - 1. The plant must be of vigorous constitution, free-growing, but not long-jointed. 2. The habit must be stout, close, and branching, and the branches thickly furnished with horizontally-set well-displayed leaves. 3. The surface of the leaves must be flat - that is, neither concave nor convex from contraction of the margin. 4. The leaf-colouring must be bright, distinct, and well defined. 5. The ground colour (green) must occupy a space in the centre equal in diameter to the combined zone and marginal belt - that is, half the diameter of the leaf; it must be of uniform hue, and must not extend into or appear beyond the zone. 6. The zone must be either evenly arcuate or regularly scolloped or vandyked, dark on the inner and brightly coloured on the outer edge. 7. The inner portion of the zone to an extent not exceeding one-half its whole breadth must be dark-coloured throughout (blackish or deep brownish red), breaking outwardly in a symmetrically radiated manner into the bright colour (red or pink) of the outer half, which latter must at no point break through the dark belt so as to touch the groundcolour. 8. The marginal belt must be of uniform breadth, and of the same tint throughout (yellow, straw-colour, cream-colour, or white), entirely separated from the ground-colour, or from contact with the darker belt of the zone.
At many country shows, the gold and bronze, or what you term the "bi-color " section, are shown as variegated Pelargoniums; but at the shows of the Royal Horticultural Society they would not be admissible as such. Consult the secretary of your show; he may be able to inform you what was done last year. It would be very wrong to give the prizes to the biggest plants, irrespective of growth and coloration. Medium-sized, well-grown, and nicely-coloured plants stand a much better chance of taking honours. The name of the variety, a leaf of which you enclosed, we take to be Lady Cullum.
 
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