Sustainable Golf Course Management
The intersection of Nordic craftsmanship and agronomic science.
Turf, understood. Developed under Nordic conditions, validated through the Living Lab at Hirsala.
The first Master Greenkeeper in the Nordic countries.
Ten years of sustainable value creation, tested at Hirsala — ranked among the world’s most sustainable golf courses.
A 360° approach, rooted in research and driven by data.
Trusted by


















Positioning
Modern agronomy for Nordic turf systems
Turfgrass Mastery represents a modern approach to turf management built on system-level understanding, agronomic science, and data-informed decision-making. From soil to surface, complexity is transformed into clarity — the result is more resilient turf, more efficient resource use, and surfaces that perform consistently under demanding Nordic conditions.
Services
Precision, not excess
Agronomy
Grass species strategy, rootzone and soil analysis, and long-term agronomic programmes built on measured data rather than routine.
Development
Course upgrade, remodelling and grow-in projects — from practice areas to full master planning, in collaboration with architects and club boards.
Consultancy
Independent, system-level advice for boards, managers and greenkeeping teams. Consultant to the Finnish Golf Union since 2018.
Lecturing
Education for greenkeeping teams, federations and industry events. Project manager and author of the Finnish Golf Course Management book.
3D Drone Mapping
Aerial survey and 3D mapping that turn course conditions into measurable, comparable data.
Turfgrass Mastery System™
Observation without data is assumption. Data without system understanding is noise. True performance emerges through measured, system-level decision-making.
Observe
“Every surface tells a story before a problem becomes visible.”
Measure
“Data transforms observation into understanding.”
Analyze
“The system is interpreted beneath the symptom.”
Evaluate
“Every action creates consequences.”
Apply
“Quality is created through better decisions, not more maintenance.”
Validate
“Every strategy must validate itself under real Nordic conditions.”
Refine
“Understanding is continuous.”
Observe deeply. Measure precisely. Understand systemically. Apply intentionally. Validate continuously.
The Agronomist
Janne Lehto MG, CGCS
Golf course agronomist, superintendent and environment consultant based in Helsinki, Finland. The first Master Greenkeeper in the Nordic countries, with tournament experience from the Ryder Cup, the Solheim Cup and The Open, and club experience from Loch Lomond Golf Club to Hirsala Golf.
Agronomy approached with the mindset of a craftsman: respect for material, discipline for detail, and the understanding that lasting performance is created through precision, not excess.

