Hydrangea macrophylla ‘Soeur Thérèse’
synonyms: ‘Sister Thérèse’, ‘Petite Soeur Thérèse de l’Enfant Jésus’
Bred by Gaigné, St-Germain-en-Laye, France, in 1947.
Hydrangea macrophylla ‘Soeur Thérèse’ is one of the better pure white mopheads, each ray floret having a pale blue eye.
Inflorescence: Mophead, 210mm across, large and pure white. Flowers will be longer lasting if grown in afternoon shade.
Colour in neutral soil: White
Colour in acidic soil with Al present: White (no change)
Ray florets: 4 sepals, serrated, not overlapping, 65mm diam.
Zones: 6 to 9
Size: Medium (to 1.5m).
Leaves: Simple, opposite and deciduous. Broadly ovate to broadly elliptic. Margin: serrate. Apex: apiculate. Base: attenuate. Venation pattern: pinnate. Texture of adaxial and abaxial surfaces: smooth, glabrous, moderately glossy. 130mm l x 70mm w.