Students for Stewardship The Cork Board
← Back to the library

Firecracker Vine

Ipomoea lobata (eye-poh-MEE-ah low-BAY-tah)

Family: Convolvulaceae Unknown Vine (vertical)

Spanish flag is an annual, flowering, herbaceous vine, native to Mexico, that is related to morning glory, but with a very different type of flower. It is a perennial in its warm, native, home, but because it is not frost tolerant, it is typically grown as an ornamental annual. At maturity, the vine can reach a length of 16 feet. The plant displays a gradient of color from yellow to red along a flower that is irregular in shape and held in upright clusters on a slender, bending stem. The plant blooms freely from mid to late summer until frost and the flowers attract hummingbirds, butterflies, and other pollinators. The genus name comes from the Greek words ips meaning "worm" and homoios meaning "resembling", referring to the sprawling underground roots of plant. The species name means "lobed" and refers to the deeply lobed foliage of this species. The common name Spanish flag vine refers to the gradient of red to yellow on the flowers. Spanish flag does best in consistently moist, organically rich, well-draining soil in a sheltered spot with full sun. It will tolerate some shade, but the colorful floral display will suffer. You should start seeds indoors about six weeks before the average last frost date. Seeds should be scarified and soaked in water for 12-24 hours to aid germination. Seeds are slow to germinate and require warm growing media (at least 70°F). Keep the plant as a indoor plant or plant outdoors once the threat of frost has completely past. It is hardy in frost free Zones 10-11, but will not tolerate temperatures below 40°F. The plant is a climbing vine and will probably require a trellis or some other structure to climb. Diseases, Insect Pests, and Other Plant Problems: Other than frost issues, there are no known diseases, insect pests, or other plant problems. More information on Ipomoea .

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 61 attributes.

How it fits the guild

Guild layer 6 - Vine (vertical) Optimal soil pH Acid (<6.0); Alkaline (>8.0); Neutral (6.0-8.0)
See companions & conflicts ↓

Companions & Conflicts

Curated pairwise relationships between this plant and others in the library — who feeds whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.

No curated interactions recorded for this species yet.

Also noted by NC State

Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.

Fills a similar niche Argyranthemum foeniculaceum Begonia x benaratensis BIG® Group Datura innoxia

Full plant profile

Growing Conditions
Plant type
Annual; Herbaceous Perennial; Vine
Life cycle
Annual
USDA zones
9a, 9b, 10a, 10b, 11a, 11b
Light
Full sun (6 or more hours of direct sunlight a day)
Soil texture
High Organic Matter; Sand
Soil pH
Acid (<6.0); Alkaline (>8.0); Neutral (6.0-8.0)
Soil drainage
Good Drainage | Occasionally Wet
NC region
Coastal; Mountains; Piedmont
Mature size
Height: 10 ft. 0 in. - 20 ft. 0 in. | Width: 1 ft. 0 in. - 2 ft. 0 in.
Growth rate
Rapid
Maintenance
Low
Canopy layer
6 - Vine (vertical)
Form & Appearance
Habit / form
Climbing; Creeping; Spreading
Texture
Medium
Foliage
Deciduous
Leaf color
Green
Leaf type
Simple
Leaf arrangement
Alternate
Leaf shape
Cordate; Ovate
Leaf margin
Lobed
Leaf feel
Smooth
Leaf value
Showy
Leaf size
3-6 inches long
Hairs present
No
Leaf detail
Large, green, deeply lobed leaves 2 to 6 inches long.
Flower color
Gold/Yellow; Orange; Red/Burgundy; White
Flower value
Long-lasting; Showy
Flower form
Raceme
Flower shape
Tubular
Flower size
> 6 inches
Flower detail
The flowers are tubular and held on upright clusters, with as many as 20 flowers per cluster. The flowers are held to one side of the flower stalk, giving the appearance of flags blowing in the wind. The flowers are orange-red as they open, but they fade to yellow and then white as they age. All colors will be present within a cluster at the same time. Blossoms will appear from mid-Summer to first frost as single-sided, 6 inch long racemes on slender stems that gently arc upward and outward away from the vine.
Bloom time
Fall; Summer
Stem color
Green; Red/Burgundy
Stem detail
twining
Wildlife & Ecology
Native status
Unknown
Origin
South West Mexico
Distribution
Introduced into parts of South America, Northern Mexico, and East Central Africa.
Wildlife value
Attracts butterflies and hummingbirds.
Attracts
Bees; Butterflies; Hummingbirds
Landscape Use
Landscape location
Container; Patio; Vertical Spaces
Landscape theme
Pollinator Garden
Design feature
Accent; Border; Specimen
Garden tags
#problem for horses #problem for dogs #problem for cats #vine #herbaceous perennial #annual #frost tender #long bloom time #colorful
Problems & Resistance
Insect problems
Banded Greenhouse Thrips
Problems
Problem for Cats; Problem for Dogs; Problem for Horses
Propagation
Seed
Poison severity
Low
Poison parts
Seeds
Poison symptoms
Vomiting, large amounts of seeds may cause hallucinations
Toxic principle
Indole alkaloids (Lysergic acid, lysergamide, elymoclavine and chanoclavine)
Contact dermatitis
No
Toxicity summary
Low severity poison; parts: Seeds

Planted at Hunnicutt

Nobody’s planted this one yet.