• Grandiflorus
  • Perennial
  • Zones 7–10 (genus)
  • Burgundy
  • Single

Black Sea

Perennial grandiflorus gladiolus in burgundy, near-black, and white, blooming in midsummer and late summer. Velvety deep maroon flowers so dark they look nearly black, with a thin white stripe down each petal, 3 to 4 inches across. USDA zones 7–10.

Cross-referenced · 4 sources

Buy from $15.75

At a glance

Flower form
Grandiflorus Single · 3–4 in (8–10 cm)
Colors
  • Burgundy
  • Near-black
  • White
Bicolor
Blooms
Midsummer, Late summer
Vase life
Not grown for cutting
Height
3–4 ft (91–122 cm)
Sunlight
Full sun
Hardiness
USDA zones 7–10 Perennial

Zones given for the genus, per NC State Extension; the sellers do not list zones for this variety.

Planted as
Corm
Botanical name
Gladiolus × hortulanus

In the garden

  • Butterflies
  • Seldom severely damaged by deer (Rutgers rating)

Find your frost dates and zone by ZIP code

Origin

Large-flowered gladiolus sold by Longfield Gardens and K. van Bourgondien.

Sources

Where to buy

Prices rechecked daily
  • Longfield GardensBulbs

    Pack size not listed

    Check availability

    $15.75Checked Nov 1, 2026

We may earn a commission when you buy through these links. Your price stays the same. Prices checked Nov 1, 2026.

Questions

Is Black Sea hardy in my zone?

Black Sea survives winter in the ground in USDA zones 7 to 10. In colder zones treat it as an annual or lift it before the ground freezes.

Does Black Sea need full sun?

Black Sea grows in full sun.

When does Black Sea bloom?

Black Sea blooms in midsummer and late summer.

Is Black Sea good for cutting?

Our sources don't list Black Sea as a cut flower or give a vase life for it.