Gladiolus Species, Ever-Flowering Gladiolus, Evening Flower Gladiolus

Gladiolustristis

Family
Iridaceae (eye-rid-AY-see-ee)
Genus
Gladiolus (GLAD-ee-oh-lus)
Species
tristis (TRIS-tis)
Synonym
Gladiolus aestivalis
Gladiolus concolor
Gladiolus flavidus
Sun Exposure
Full Sun
Foliage
Herbaceous
Height
36-48 in. (90-120 cm)
Spacing
6-9 in. (15-22 cm)
Hardiness
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
Danger
Parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction
Bloom Color
Pale Yellow
Cream/Tan
Bloom Time
Late Spring/Early Summer
Mid Summer
Other Details
Category
Bulbs
Tropicals and Tender Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Flowers are good for cutting
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Cypress, California

Irvine, California

Lafayette, California

Redwood City, California

Richmond, California

San Francisco, California

Houston, Texas

Richmond, Texas

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Gardener's Notes:

2
positives
1
neutral
0
negative
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C
ROSLINDALE, MA | September 2016 | neutral

Though this is often called the ever-blooming gladiolus, its boom season is no longer than any other gladiolus.

Can spread...Read More

M
M
Belmont, CA (Zone 10a) | March 2006 | positive

In the San Francisco Bay Area, Gladiolus tristis begans blooming in mid-February, and is almost over by mid-March. It is only scented at ...Read More

J
Seattle, WA (Zone 8a) | October 2003 | positive

Native to S. Africa. Fragrant, creamy to yellow flowers veined with purple. Blooms in late spring. No water in summer. Begin watering...Read More

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