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The Royal Horticultural Society - advice for choosing trees for smaller gardens.

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The Arboricultural Association - tree surgery and general arboricultural advice for homeowners.

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Sylva Foundation - an environmental charity working to revive Britain's wood culture.

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Arbtalk - ask an arborist for advice about your own trees.

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The Royal Scottish Forestry Society - a charity devoted to the advancement of forestry in all its branches.

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