Bespoke garden design · London & the Home Counties

Gardens designed to be lived in, and loved for years.

The practice

Green Oasis Design creates calm, considered gardens where planting leads and every detail has a purpose: spaces that sit naturally with your home and grow richer each season.

I’m Lionel Ely-Marius, the garden designer behind Green Oasis Design. I take each project from first conversation to finished garden, working with a trusted network of landscapers, craftspeople and nurseries.

Selected projects

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Family garden with a lawn, wooden play tower and shaded woodland planting

Hammersmith family garden with a stone terrace, lounge seating and layered shade planting

White City roof terrace garden with Verbena bonariensis, ornamental grasses and steel planters

Layered rooftop terraces in central London with lush planting along the parapets

London front garden with clipped box balls, lavender and layered shrubs beside a busy street

London rooftop terrace with chimney pots, planters and an outdoor dining area

Mediterranean-inspired planting, designed for a changing climate.View project

Services

From first sketch to the final plant.

Garden design

Bespoke designs that blend elegance and harmony, from concept and master plan to detailed drawings.

Consultancy

A focused visit to unlock your garden’s potential, with clear advice on layout, planting and next steps.

Garden development

I oversee the build with trusted landscapers, so the finished garden matches the design.

Planting design

Thoughtful, sustainable planting schemes that change with the seasons and support wildlife.

How we work

Consultation

We listen to your vision, needs and budget.

Survey

Measurements, light, soil and constraints.

Concept

Sketches and layouts to shape the direction.

Master plan

Detailed plan, materials, planting and budget.

Build

Built by trusted landscapers, overseen by me.

Aftercare

Guidance so the garden matures as intended.

“Lionel transformed our garden and delivered the vision we had of a peaceful oasis in central London, despite deep shade in some areas and full sun in others. The result is perfect.”

Valérie · Hammersmith

About Lionel

Rooted in the Caribbean, growing gardens in London.

Lionel’s love of plants began in the lush landscapes of his childhood. Trained in garden design at Capel Manor and the London College of Garden Design, he brings a horticulturist’s knowledge and a designer’s eye to every garden.