About

Based in Cumbria, Curve 21 offers garden and landscape management expertise that will provide its clients with concise evaluation, design, and sustainable management planning.

With 28 years of experience developing private gardens and parklands in Cheshire, Oxfordshire and Yorkshire, Curve 21 is grounded in practical experience, that is backed by professional and academic achievements.

Curve 21 was created and founded in Cumbria by Jonathan Cansdale in 2025. Jonathan is a Chartered Horticulturist, holds the Technician grade membership with The Arboricultural Association, he is an RHS Master of Horticulture and is a member of the Professional Garden Consultants Association and the Cumbria Chamber of Commerce.

About Jonathan Cansdale

How did I get here?

My experience at a senior level has been grounded over 30 years in the development of large private gardens in Surrey, Oxfordshire, Cheshire and Yorkshire.

Each successive role crossed the boundaries of head gardener into project management, contemporary garden and landscape design, landscape recovery and ever wider stake holder engagement. As each role grew, the research behind every part of my practice continued to develop through study, conference attendance and international travel. As a Chartered horticulturist I have followed my experience to study and practice social and therapeutic horticulture, connectivity of green infrastructure, management planning and to expand and formalise my knowledge in the protection of ancient and veteran trees.

Academic and Professional Progression