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- The International Society for Horticultural Science (ISHS) is the world's leading independent organization of horticultural scientists. Its aim is "to...4 KB (370 words) - 18:18, 6 July 2024
- The Hardy Plant Society is a British charity that promotes the cultivation of hardy herbaceous plants. The society was founded in 1957 by a group of gardeners...6 KB (762 words) - 11:37, 23 August 2022