Grefsheim Spirea, spiraea x cineria 'Grefsheim', is a densely, arching shaped shrub that is a lovely early flowering spirea. It has cascades of white flowers in April or early May. The narrow soft green foliage is combined with an abundance of white flowers in dense clusters all along the branches. The flowers appear before the leaves in mid spring, completely covering the shrub, giving the effect is of a light cloud. Grefsheim is among the easiest flowering shrubs to grow since it tolerates many soils, except extremely wet; requires full sun. The plant also likes mulch and summer watering. It grows 4-5 feet in height as well as width. Originated in Norway.

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