Gladiolus Species, Waterfall Gladiola

Gladiolus cardinalis

Family
Iridaceae (eye-rid-AY-see-ee)
Genus
Gladiolus (GLAD-ee-oh-lus)
Species
cardinalis (kar-dih-NAL-iss)
Synonym
Sun Exposure
Full Sun
Foliage
Herbaceous
Height
12-18 in. (30-45 cm)
18-24 in. (45-60 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
Red
White/Near White
Bloom Time
Late Spring/Early 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
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:

Richmond, California

Gainesville, Florida

Featured Videos

Gardener's Notes:

2
positives
1
neutral
0
negative
Sort By:
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E
Brea, CA | April 2022 | neutral

Again, either discontinued or not available at Annie's Annuals.

A
| February 2014 | positive

Simply magnificent, flower in late summer in the Shetland Islands - on a south-facing slope, facing the sea in ordinary, acidic soi. It i...Read More

R
(Zone 1) | October 2012 | positive

Gladiolus cardinalis - a rare Sth African native - has vibrant tomato red flowers splashed with cream, which blooms in late Spring, is va...Read More

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