Discover the World’s Most Ingenious Wetland Growing Systems & Gardening Techniques That Help UK Gardeners Understand The Basics.
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From France’s floating Hortillonnages to Mexico’s ancient Chinampas and Bangladesh’s flood-proof floating gardens, these sustainable growing methods harness water for thriving crops. As the UK faces wetter winters and unpredictable rainfall, these time-tested systems offer eco-friendly solutions for waterlogged soils, boosting fertility, resilience, and biodiversity. Whether you’re dealing with a boggy allotment or want to experiment with aquaponics, explore how global wetland agriculture can inspire your gardening—saving water, reducing waste, and adapting to climate change.
Several of these techniques have been featured in depth in previous articles. Click the links to discover more.
1. Hortillonnages (France)
Les hortillonnages de Amiens
Description: Hortillonnages are floating gardens found in the marshlands of Amiens, France. They consist of small, man-made islands surrounded by canals, where crops are grown on fertile, waterlogged soil.
Key Features:
Raised beds with rich, organic soil.
Irrigation and drainage managed through canals.
Traditionally used for growing vegetables and flowers.
2. Chinampas (Mexico)
Description: Chinampas are artificial islands built in freshwater lakes, particularly in the Valley of Mexico. They were developed by the Aztecs and involve creating rectangular plots of fertile soil anchored to the lakebed.
Key Features:
Constructed using layers of mud, vegetation, and organic matter.
Crops grown include maize, beans, squash, and flowers.
Canals between the plots provide irrigation and transportation.
3. Floating Gardens (Bangladesh and Myanmar)
Description: Known as baira or dhap, these are rafts made of water hyacinth, bamboo, or other buoyant materials, topped with soil and compost. They are used in flood-prone regions to grow vegetables and herbs.
Key Features:
Adaptable to seasonal flooding.
Crops include gourds, spinach, and okra.
Provides food security in areas with unpredictable water levels.
4. Waru Waru (South America)
Description: An ancient Andean agricultural system used in the high-altitude regions of Peru and Bolivia. It involves raised fields surrounded by water channels to regulate temperature and moisture.
Key Features:
Combines raised beds with irrigation canals.
Protects crops from frost and waterlogging.
Crops include potatoes, quinoa, and maize.
5. Rice Paddies (Asia)
Description: Flooded fields used for growing rice, commonly found in countries like China, India, Japan, and Southeast Asia. The paddies are carefully managed to maintain water levels.
Key Features:
Requires terracing in hilly regions.
Supports rice as well as fish and ducks in integrated systems.
Highly labour-intensive but productive.
More Wetland Growing Systems Below!
6. Integrated Aquaculture-Agriculture (Global)
Description: Combines fish farming (aquaculture) with crop cultivation. Fish waste fertilises the crops, while plants filter the water for the fish.
Key Features:
Common in Southeast Asia and parts of Africa.
Crops include rice, vegetables, and herbs.
Fish species like tilapia and carp are often used.
7. Tidal Irrigation (Europe and Asia)
Description: A system that uses tidal flows to irrigate crops in coastal or estuarine areas. It was historically used in places like the Netherlands and parts of China.
Key Features:
Relies on natural tidal movements to flood and drain fields.
Suitable for crops like barley, wheat, and vegetables.
Helps manage salinity in coastal soils.
8. Raised Field Agriculture (Global)
Description: Similar to chinampas, raised fields are elevated plots of soil surrounded by water channels. They are used in wetland areas to improve drainage and soil fertility.
Key Features:
Common in tropical and subtropical regions.
Crops include maize, beans, and root vegetables.
Reduces waterlogging and improves aeration.
9. Wetland Taro Cultivation (Pacific Islands)
Description: Taro is grown in flooded fields or wetland areas, particularly in Hawaii, Fiji, and other Pacific Islands. The fields are carefully managed to maintain water levels.
Key Features:
Taro is the primary crop, but fish and other plants may also be grown.
Requires careful water management to prevent stagnation.
Culturally significant in many Pacific Island communities.
10. Floating Rice Cultivation (Southeast Asia)
Description: A traditional method of growing rice in deep-water or flood-prone areas. The rice varieties used can elongate their stems to keep pace with rising water levels.
Key Features:
Common in the Mekong Delta and other flood-prone regions.
Provides food security in areas with seasonal flooding.
Description: Seasonal wetlands used for agriculture during the dry season. Crops are grown in the fertile, moist soils left after the water recedes.
Key Features:
Supports crops like maize, vegetables, and legumes.
Relies on natural water retention in the soil.
Provides a buffer against drought.
12. Paludiculture (Europe and Beyond)
Description: A modern approach to wetland agriculture that focuses on sustainable cultivation of crops like reeds, cattails, and peat moss in rewetted peatlands.
Key Features:
Aims to restore degraded wetlands while producing biomass.
Crops are used for bioenergy, construction, and horticulture.
Helps reduce greenhouse gas emissions from drained peatlands.
Why These Methods Matter
These traditional and modern growing methods demonstrate how humans have adapted to wetland environments to produce food sustainably. They highlight the importance of working with natural water systems, rather than against them, and offer valuable lessons for sustainable agriculture in the face of climate change and water scarcity.
