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Best soil chemistry for roses: Roses seem to grow best in soil that has a chemical pH of about 6.5.
Noble flowers:The four noble plants of the ancient Chinese were the Chrysanthemum, the Orchid, the bamboo, and the plum, and therefore only the upper class Chinese were permitted to grow them in their gardens. Correct attire for visiting the city: There was a song in the 70's advising people to wear flowers in their hair when going to San Francisco.
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