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Balloonvine, Heartseed
Cardiospermum corindum var. corindum

Copyright by: Roger L. Hammer

General Landscape Uses: Primarily recommended for natural landscapes and habitat restorations. Also butterfly gardens in the upper Florida Keys.

Ecological Restoration Notes: Grows along the edges of coastal hammocks, but may become too aggressive during early stages of restoration.

Availability: Grown by enthusiasts.

Description: Climbing vine with tendrils.

Dimensions: N/A; a vine with stems to 10 ft or more in length.

Growth Rate: Fast.

Range: Monroe and Miami-Dade counties; West Indies, Texas, Mexico, Central America and South America. In the Monroe County Keys, very rare or extirpated south of Plantation Key and apparently absent from the lower Keys.

Plant Map Map of select IRC data from peninsular Florida.

 Map of suggested ZIP codes from South Florida north to southern Brevard, Osceola, Polk, and Pasco counties.

 Map of ZIP codes with habitat recommendations from the Monroe County Keys north to Martin and Charlotte counties.

Habitats: Coastal hammocks.

Soils: Moist, well-drained limestone soils, with humusy top layer.

Nutritional Requirements: Moderate; can grow in nutrient poor soils, but needs some organic content to thrive.

Salt Water Tolerance: Low; does not tolerate flooding by salt or brackish water.

Salt Wind Tolerance: Moderate; grows near salt water, but is protected from direct salt spray by other vegetation.

Drought Tolerance: High; does not require any supplemental water once established.

Light Requirements: Full sun.

Flower Color: White.

Flower Characteristics: Semi-showy.

Flowering Season: All year.

Fruit: Inflated, papery capsule; seeds with a heart-shaped hilum.

Wildlife and Ecology: Larval host plant for Miami blue (Cyclargus thomasi bethunebakeri) and silver-banded hairstreak (Chlorostrymon simaethis) butterflies; occasional larval host for gray hairstreak (Strymon melinus) butterflies.

Horticultural Notes: Can be grown from seed.

Comments: Recruits readily in the garden from seed.

Copyright by: Roger L. Hammer

Copyright by: George D. Gann
in habitat, Everglades National Park, Florida, 2013

Copyright by: George D. Gann

Copyright by: Kristen Finch
Cultivated plant, Palm Beach County, Florida, 2013

Copyright by: Keith A. Bradley

Copyright by: Keith A. Bradley

Other data on Cardiospermum corindum var. corindum available from:

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