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Calendar of Garden Events - http://www.gardencalendar.com/
Searchable database of gardening events submitted by garden clubs, plant societies, academic groups, botanical gardens and nurseries.
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Hunter's Garden Marlborough - http://www.garden-marlborough.com
Annual celebration of gardening whose purpose is to promote the gardens of Marlborough, New Zealand.
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ICanGarden: Gardening Events - http://www.icangarden.com/event.cfm
Calendar of upcoming gardening events (shows, courses, chat events, excursions), mostly in Canada and the United States.
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