Skip to content

Nikko Blue

Active

Hydrangea macrophylla (Thunb.) Ser. Bigleaf hydrangea · Ornamentals · bred by No information of breeder available for this variety

also searched as: никко блуе

Variety description

10 August 2026

The shrub has a spreading, rounded shape, reaching a height of 1.2–1.5 m with a comparable crown width. The leaves are large, elliptical or ovate, bright green with a serrated edge.

Mophead-type inflorescences reach 12–25 cm in diameter. On acidic soils with pH 4.5–5.5, the flowers become intensely blue or indigo, on neutral and slightly alkaline ones — pink or lilac.

Flowering is prolonged, from June to September-October. There is conflicting data regarding the flowering type: on previous year's shoots or on both current and previous year's shoots together.

The variety belongs to USDA hardiness zone 6 (down to -23°C); in temperate climates, it requires covering or cultivation in containers. It prefers partial shade, protection from wind, and regular watering, and is characterized by relative disease resistance.

Sources8
  • Loading…

Countries of admission

1 jurisdiction

Green indicates countries where the variety is listed in the national catalogue and its seeds are authorized for sale. Expired registrations are marked separately: the variety was previously admitted, but sale is no longer permitted.

active no record

Variety in registries Regions of admission, rights holders, and status of plant breeders' rights

Parties

Records are sourced from official registry publications. Data sources and legal status

Found an error in the record?

The directory replicates the primary source. If an entry differs from the official publication, please specify the discrepancy and provide a link if possible. Corrections are added to the moderation queue.

This is a directory, not an official registry: data is based on public disclosures and may have changed. More about sources

Same species

Other varieties: Bigleaf hydrangea

All 2 407 varieties of species

H20-02

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Ryoji Irie

6 records

PIIHM-II

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Michael Dirr

5 records

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Kolk Jacobus W. P.|1187 NK Amstelveen, NL

FR
6 records

Nigra

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

No information of breeder available for this variety

FR
1 record

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Japan

FR
1 record

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Lambert Söhne J.

FR
1 record

Nearby in the species list NHS20B22, NHS20B32, NHS20B33, NHS20B41, NHS20B42, Nidu, Niedersachen, Nightingale, Nigra, Niijima-Gaku, Nikolaus Lambert, Ningbo, Nith Haiah, Nivalis, Nixe, Nizza, NOB-01, NOB-06, NOB 09, NOB 10

Discussion: Nikko Blue

0 messages

Growing experience and notes on the entry. Comments are not part of the reference data and are not verified against primary sources.

Comments are open to signed-in readers. Sign in · Sign up