This is our Cadnam Garden Centre Garden Center page. We have listed the full address of Cadnam Garden Centre, phone numbers and websites. Cadnam Garden Centre is in Southampton. Cadnam Garden Centre sells gardening and lawn care supplies, garden tools and equipment, garden furniture, water gardens and garden accessories in Southampton. You�ll find everything from plants, shrubs and trees to soil and gardening tools. All the supplies you�ll need to build your garden. This Garden Center is in Southampton.