Hydrangea Madame Emile Mouillere –shrubone Of The Best Mophead Hydrangeas. this Lovely Mophead Hydrangea Has Showy Flowers That Are Pristine White When They First Appear Becoming Tinged With Pale Pink As They Age. Vigorous & Healthy, Madame Emile Mouillere Looks Marvellous In A Moist, Semi- Shaded Border Or Grown In A Large Container On A Shady Patio.plant Into Humus-rich, Moisture Retentive Soil. after Care Keep Plants Well Watered Especially In Dry Weather.keep Faded Flowers On The Stems Over Winter To Protect Buds From Frost. The Dried Flower Heads Also Look superb In Winter Arrangements.prune In Spring, Cut Flowering Stems Back To A Healthy Pair Of Buds.on Established Plants Prune Out A Third Of Old Stems In Spring To Encourage Fresh New Growth.flowers July-augustheight Up To 2m/7ft.