Thuja occidentalis 'Smaragd'
|Layers per DC||6|
|Number per DC||630|
|Decrease||min. 1 DC|
|Barcode||8 716 137 000 029|
Thuja occidentalis 'Emerald' is noticeable from its bright green colour and very thin branches. It keeps its bright colour in the winter. In the summer the conifer gets a yellow glow. If an 'Emerald' gets the space, it can grow to up to two metres high. It keeps its cone or pyramid shape and stays nice and closed. In The Netherlands the cultivar is called 'Smaragd' and the French call the conifer 'Emeraude'. Both names mean Emerald, which is also the official name of the cultivar.
'Smaragd' is a descendant of the 'Kelleriis Viridis' cultivar. A descendant is a naturally occurring variety, which is in fact not caused by a change in its ancestral planting. 'Emerald' and 'Kelleriis Viridis' therefore have completely the same hereditary properties. Only the extent to which the ancestral planting has had an effect is different. A descendant can therefore only be maintained by using cuttings or other forms of vegetative propagation. The finder of ‘Emerald’ is D.T. Poulsen from Kvistgaard in Denmark. The first report of the new Emerald green cultivar was made in 1950.
The Royal Horticultural Society (RHS, London) crowned 'Emerald' with the prestigious ‘Award of Garden Merit’ in 1993.
Kelly, J. en J. Hillier, 1995. The Hillier gardener’s guide to trees & shrubs.
Krüssmann, G., 1983. Handbuch der Nadelgehölze. 2., neubearbeitete Auflage.
Ouden, P. den en K. Boom, 1965. Manual of cultivated conifers. Hardy in the cold- and warm-temperate zone.
Welch, H. en G. Haddow, 1993. The world checklist of conifers.