Tilia Garden Design is based in High Barnet, North London and was founded by Helen Mulligan.
I provide a fully taliored garden design service to suit your needs; whether you are looking for a complete redesign, revitalising an existing border or enhancing your garden with some planted containers, contact me today to discuss your garden needs. 



Helen Mulligan 

I decided to retrain as a garden designer after working in marketing for many years. Prevously trained in theatre and dance, I am now happy to be returning to a more creative role and connecting with nature.

I have always been fascinated by the emotional reaction we all have to natural spaces and gardens and it is my aim to work closely with every client to help them to achieve their perfect outside space. 

I studied at Capel Manor College and have a Level 3 Diploma in Garden Design and a Level 2 Foundation Certificate in Garden Design, fully insured with public liability insurance and indemnity insurance, pre-registered member of the Society of Garden Designers https://www.sgd.org.uk and member of The Gardeners Guild https://thegardenersguild.ning.com


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The Gardeners Guild (TGG) is a national trade network for qualified gardeners.  Established in 2006, TGG maintains a register of certified gardeners who offer garden and grounds maintenance as part of their services.  TGG provides you with greater assurance when selecting a gardener.  TGG members must hold at least one government endorsed horticultural qualification and are required to abide by the terms of membership.  As a client of Tilia Garden Design you can be confident that you have chosen a TGG member who has been officially trained and formally assessed to meet high horticultural standards.