Gardeners' Question Time Waltham Forest: Coriander, Sow-By-Date and Perennials
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Dec 5, 2025 
This lively discussion features James Wong, an ethnobotanist known for his botanical insights, horticulturist Matthew Biggs, offering practical plant-care tips, allotment enthusiast Frances Tophill, who shares enthusiastic growing strategies, and seasonal expert Anne Swithinbank, providing winter preparation advice. They dive into the secrets of growing coriander, the importance of sow-by dates, and how perennials can thrive in challenging climates. Plus, Anne highlights essential winter protection strategies for garden plants!
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Moving Perennials To A New Climate
- Be selective when moving; lift and move treasured perennials dormant in winter or take divisions/cuttings to re-establish.
- Treat relocation as a chance to trial local plants suited to the Black Isle microclimate.
Microclimates Change What's Possible
- Different UK microclimates let you grow unexpected plants, sometimes warmer than London.
- Moving gardens offers emotional continuity through favourite plants and new opportunities for experimentation.
Design A Dramatic Forest-Edge Garden
- Use the woodland as a dramatic backdrop and plant statement foregrounds like a few tree ferns to create a tropical effect.
- Accent trunks with moss or hardy orchids for added atmosphere.