North America Non-native Plant

Gladiolus Murielae

Botanical name: Gladiolus murielae

USDA symbol: GLMU

Native status: Not native but doesn't reproduce and persist in the wild

Synonyms: Acidanthera bicolor Hochst. (ACBI7)   

Gladiolus murielae: The Fragrant Star of Late Summer Gardens If you’ve been searching for a plant that combines elegance with an intoxicating evening fragrance, meet Gladiolus murielae – a bulbous beauty that’s been quietly stealing hearts in gardens worldwide. Also known by its former botanical name Acidanthera bicolor, this graceful ...

Gladiolus murielae: The Fragrant Star of Late Summer Gardens

If you’ve been searching for a plant that combines elegance with an intoxicating evening fragrance, meet Gladiolus murielae – a bulbous beauty that’s been quietly stealing hearts in gardens worldwide. Also known by its former botanical name Acidanthera bicolor, this graceful perennial brings a touch of exotic charm to late summer and early fall landscapes.

Where Does Gladiolus murielae Come From?

This stunning plant calls the highlands of eastern tropical Africa home, particularly thriving in the mountains of Ethiopia and surrounding regions. In its native habitat, it grows in well-draining soils at higher elevations where temperatures are more moderate than the surrounding lowlands.

What Makes This Plant Special?

Gladiolus murielae is like the sophisticated cousin of the common gladiolus you might know. Here’s what sets it apart:

  • Pristine white flowers with dramatic dark purple-black markings at the base
  • Intensely fragrant blooms that release their perfume in the evening
  • Graceful, arching sword-like foliage
  • Late summer to early fall blooming period when many other flowers are fading
  • Excellent cut flower that brings fragrance indoors

Is This Plant Right for Your Garden?

Gladiolus murielae can be a delightful addition to many garden styles, though there are a few things to consider. Since it’s not native to North America, it won’t provide the same ecological benefits as native plants. However, it does offer some value to pollinators, particularly butterflies that are attracted to its fragrant evening blooms.

This plant works beautifully in:

  • Cottage-style gardens
  • Cutting gardens
  • Mixed perennial borders
  • Container gardens
  • Moon gardens (gardens designed to be enjoyed in the evening)

Growing Conditions and Care

The good news is that Gladiolus murielae isn’t particularly fussy, but it does have some specific preferences:

Climate Requirements

This plant thrives in USDA hardiness zones 7-10. In colder regions, you’ll need to treat it like a tender bulb – planting in spring and lifting the bulbs before winter frost.

Soil and Sun Needs

  • Well-draining soil is absolutely essential
  • Full sun to partial shade (morning sun with afternoon shade works well in hot climates)
  • Slightly acidic to neutral soil pH
  • Regular moisture during growing season, but not waterlogged conditions

Planting Tips

Plant bulbs in spring after the last frost date, setting them about 4-6 inches deep and 6 inches apart. In containers, you can space them a bit closer for a fuller display. The bulbs typically take 90-120 days to bloom from planting, so plan accordingly if you want flowers for a specific time.

Maintenance and Care

Once established, Gladiolus murielae is relatively low-maintenance:

  • Water regularly during the growing season
  • Deadhead spent blooms to encourage continued flowering
  • Allow foliage to die back naturally to feed the bulb
  • In zones 6 and below, lift bulbs after foliage dies and store in a cool, dry place over winter
  • Divide clumps every 3-4 years to prevent overcrowding

Supporting Native Alternatives

While Gladiolus murielae can be a lovely garden addition, consider pairing it with or substituting native plants that provide similar aesthetic appeal while supporting local ecosystems. Depending on your region, native options might include wild bergamot, native lilies, or fall-blooming asters that offer late-season color and fragrance while providing crucial habitat for native pollinators and wildlife.

The Bottom Line

Gladiolus murielae offers something special – that magical combination of beauty and fragrance that makes evening garden strolls unforgettable. While it requires a bit more attention in colder climates and doesn’t provide the ecological benefits of native plants, it can certainly earn its place in the right garden setting. Just remember to balance exotic beauties like this with plenty of native plants to create a landscape that’s both beautiful and beneficial to local wildlife.

Whether you’re drawn to its elegant white blooms, enchanting evening fragrance, or its value as a cut flower, Gladiolus murielae might just become your new favorite late-summer star.

Gladiolus Murielae

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Liliales

Family

Iridaceae Juss. - Iris family

Genus

Gladiolus L. - gladiolus

Species

Gladiolus murielae Kelway & Langport ex anon.

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA