Ed van Paassen · Plant Expert
Plants are more
than decoration.
They are part of
the solution.
Horticulture · Water · Agriculture · Green Cities
Hello
I’m Ed van Paassen
Plant Expert
Plant-technical problem solving and multidisciplinary horticultural advice, connecting plant physiology, genetics, propagation, cultivation, biodiversity and practical growing experience.
Field Note · 001
Observe.
Understand.
Grow.
Corylus avellana · Observation & practice
What I do
Areas of Expertise
From plant science to practical solutions in the field. Connecting knowledge with real-world impact.
01 Plants
How plants grow, adapt and respond: physiology, genetics, roots, propagation and cultivation.
02 Water
Water-smart systems, irrigation, resilience and practical solutions for difficult growing environments.
03 Agriculture
Sustainable production, horticulture and international agricultural development viewed as one connected system.
04 Cities
Green cities, biodiversity, plant assortment and healthier living environments for the future.
Practical solutions
Selected Projects & Ideas
WaterCone
Solar drinking water from a remarkably simple idea.
Waterboxx
Growing trees with captured rain and dew.
Contour Trenching
Harvesting rainwater to help landscapes recover.
Green Roofs
Turning unused roofs into working urban ecosystems.
3–30–300 Rule
A practical framework for greener, healthier cities.
Pivot Irrigation
Water efficiency at landscape scale.
Field Notes
Latest Observations
Pivot Irrigation in Africa: Green Circles Against Food Insecurity
Fly over farmland in a dry region, and you may spot perfect green circles in the sand. These are pivot…
Climate Change and Sustainability: The Role of Plants on Wellbeing Indoors
We spend about 90% of our lives indoors. Meanwhile, climate change pushes us inside even more, into cooled offices and…
Climate Change and Sustainability: The Role of Trees in Urban Landscaping
No machine cools a street like a tree does. Meanwhile, our cities keep getting hotter, wetter and more polluted. In…
Observe.
Understand.
Grow.
Understanding plants means understanding the whole system — above ground, below ground and in the world around them.
Ed van Paassen · Plant Expert
Plant knowledge in practice
Have a plant challenge that needs another pair of eyes?
Ed works as a sparring partner and plant-technical problem solver for growers, horticultural SMEs, projects and organisations that need to find the missing link.