History 161 Gardens 87 Gardening 74 Landscape architecture 59 Design 29 Fruit-culture 21 Landscape architects 21 more ... Landscape gardening 21 Environmental aspects 20 Social aspects 19 Vegetable gardening 16 National parks and reserves 15 Crops 13 Parks 13 Agriculture 12 Horticulture 12 Organic gardening 12 Control 11 Nature conservation 11 Plant diseases 11 Gardens, Chinese 10 Historic gardens 10 Seeds 10 Transgenic plants 10 Gardens, Japanese 9 Government policy 9 Landscape design 9 Corn 8 Grafting 8 Pesticides 8 less ...