This section is from the book "Commercial Gardening Vol2", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
Such kinds as asarina, glutinosum, and sempervirens, all more or less creeping, about 6 in. high, and with pale-yellow flowers, are excellent little rock plants. See also Snapdragon.
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