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What you’ll see and learn
Discover what lichens are, where they grow on bark, rock and other surfaces, and how their colours and growth forms help us recognise them.
Format: One-hour guided public tour.
Quizzes for the General Tour
What you’ll explore
Identification features, growth forms and substrates; lichen ecology and environmental relationships; and topics such as conservation, cultural heritage and biodeterioration.
Format: Focused, field-based guided discussion shaped for the group.
Format: Three-hour guided public tour.
Field-Based Discovery
“Spot the Lichens” Trail: A self-guided route through the Rock Garden, Arboretum, and Natural Area, where visitors are encouraged to find lichens on rocks, trees, and soil. QR codes link to photos, ecological notes, and Kew’s digital species database.
Tree Bark Exploration Stations: Portable magnifiers or hand lenses mounted near selected trees (e.g., oak, cherry, plane) allow visitors to observe growth forms — crustose, foliose, fruticose — and understand substrate preference.
Rock Surface Ecology: Interactive boards explain how lichens chemically weather stone, contributing to soil formation and the biodeterioration–bioprotection balance relevant to Kew’s heritage buildings.
Lichen Biodiversity Survey Programme: Participants record lichen species or growth forms observed on designated trees or stones. Data are uploaded via an app or Kew’s website, contributing to a “Kew Lichen Atlas.”
Air Quality Learning Module: Visitors compare species richness across garden zones — for example, near roads versus deeper woodland — to understand how nitrogen and pollution gradients affect lichen health.
Student Research Projects: University and school groups can engage in long-term monitoring plots, collecting data on lichen colonization, microclimate, and biodiversity recovery over time.
Ecologically, the Lichen Garden demonstrates the importance of lichens as pioneer organisms and ecosystem engineers. Their ability to initiate colonisation on bare surfaces, contribute to soil formation, and support microhabitats for invertebrates and microorganisms makes them ideal subjects for teaching ecological succession, nutrient cycling, and symbiosis. Field modules in the Lichen School expand on these lessons by examining how lichen distribution responds to microclimatic gradients, canopy structure, and pollution exposure across the Gardens.
Conclusion Interactive learning transforms lichens from overlooked crusts into powerful educational tools. At Kew, they can teach visitors to see the unseen — the quiet symbiosis on bark and stone, the ecological signals in air and rain, and the resilience of life in changing climates. By merging science, art, and technology, Kew can make lichen education participatory, multisensory, and enduring. This approach enhances understanding of biodiversity and strengthens Kew’s mission: to inspire discovery, foster stewardship, and reveal the interconnectedness of all life forms — even those we might easily overlook.
Lichens may seem small, but they reveal Kew Gardens’ hidden beauty and ecological richness. Educational programs introduce visitors to their fascinating forms, colours, and growth on trees, rocks, and soil. Learning to identify lichens helps people appreciate their role in clean air, biodiversity, and ecosystem health. Kew’s lichen education highlights how these subtle organisms connect nature, history, and science, inspiring curiosity and conservation awareness among all ages.