The Bigleaf Hydrangea 'Otaksa' (also known as 'Otaaksa') is a mophead cultivar of Hydrangea macrophylla with a Japanese origin. It produces large, rounded flower heads that are typically a soft pink or blue, depending on soil pH. The plant has a graceful habit and is a reliable bloomer. This cultivar represents the classic Japanese hydrangea aesthetic.


| Family: | Hydrangeaceae (hy-drain-jee-AY-see-ee) |
| Genus: | Hydrangea (hy-DRAIN-juh) |
| Species: | macrophylla (mak-roh-FIL-uh) |
| Cultivar: | Otaksa |
| Additional info: | (aka Otaaksa) |
Bigleaf Hydrangea 'Hornli': Miniature Mountain Charm
Bigleaf Hydrangea 'Fantasia': Forever Fantasia Mophead
Bigleaf Hydrangea 'Ayesha': Unique Cupped Petals in a Classic Mophead
Bigleaf Hydrangea 'Peace' (Bloomtastic!®): Double-Flowered Mophead with Layered Petals
Bigleaf Hydrangea 'Schneeball': Classic White Mophead, the Snowball Hydrangea
Bigleaf Hydrangea 'Hopcorn': Unique Popcorn-Textured Mophead
Bigleaf Hydrangea 'Romance' (YouMe® Series): Double Mophead with Layered Petals
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