leonie cornelius




About Leonie

Leonie Cornelius is a Garden Designer and Interior Architect.  Her company Blume house specialises in extraordinary customised Garden and Interior designs for companies and brands as well as private clients. One of Ireland’s leading garden designers, Leonie has worked on the RTE today show as the regular garden design expert and is a Judge on the popular RTE Super Garden show.

One of Leonie’s main focus points in her work is to cross-collaborate with other artists and designers and she has worked on many art projects, cross collaborative design and craft, jewellery and furniture design.

Her approach to gardens is to create a planting palette the same way that an artist would create a painting. Layers of planting create a composition which is always unique and surprising and they tell a personal story for the client.

Writing is another one of Leonie’s passions and her unique design skills and self proclaimed love of sharing creative ideas can be seen weekly in the Irish Mail on Sunday. She has also written for the Irish Independent Weekend Magazine as well as many others.

Her Show gardens  for Dubarry of Ireland, the Leitrim Development Company and Super Garden have won many medals including two Gold medals, A best in category and Silver-Gilt.

Background and Design Path

Born in Monchengladbach in the North West of Germany, Leonie grew up with surroundings of industrial architecture. On a search for a place of beauty to settle,  and some time living on the island of Ithaka in Greece, Leonie’s parents decided to settle on the wild Atlantic coast of Ireland. After finishing school Leonie  initially studied Interior Architecture her design approach is rooted in strong architectural form and clear symmetries. After combining her architecture with a diploma in Garden Design from the prestigious KLC school of design in London, Leonie’s designs place a firm emphasis on combining inside and outside and she believes that there is a vital connection between the two.



Design approach

Leonie intends to bring the highest quality of design both Inside and out and strives to create extraordinary design for the client. As an Interior Architect and Garden Designer, Leonie Cornelius draws inspiration both from the natural prairie planting styles as well as clear architectural lines and symmetries resulting in an exciting synthesis of old and new. Nature and Architecture working in harmony.

The design philosophy is firmly rooted in the belief that purity of beauty and harmony teamed with an ethical and sustainable approach are the highest achievement both within architecture and garden design.



Leonie has worked as the Garden Design Expert on the RTE Today show with Maura Derrane and Daithi O’ Se. She Also worked  as Judge on the popular RTE Supergarden show. Leonie also worked on the RTE Ploughing Live show where she reported for the live show as part of the RTE One Ploughing Live Show.

She is represented by Lisa Richards Agency