Hydrangea macrophylla ‘Gertrud Glahn’

synonym: H. m. ‘Gertrude Glahn’ (incorrect spelling)

Bred by F. Matthes, Germany, in 1923.

H. macro Gertrud Glahn AA

Hydrangea macrophylla ‘Gertrud Glahn’ is a medium-sized shrub with large flowerheads.  Flower colour can be pink or light blue depending on soil conditions. The flowering period is June to August.

Inflorescence: Mophead, 140mm across, bright pink or light blue.

Colour in neutral soil:     Pink
Colour in acidic soil with Al present:     Light blue

H. macro Gertrud Glahn floret AA

Ray florets: 3, 4, or 5 sepals, rounded or with slight serrations, overlapping, 45mm diam.


Zones: 5 to 9
Size: Medium (to 1.5m).


H. macro 'Harlequin' leaf DD540

Typical H. macrophylla leaf, rich green, heavily serrated,
110mm l x 75mm w.