Downy milkpea
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Galactia volubilis
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Fabaceae
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Landscape Uses:
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Primarily recommended for natural landscapes and habitat restorations. Also wildflower and butterfly gardens. |
Ecological Restoration Notes: |
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A relatively common understory herb or small vine in pine rocklands and coastal uplands. |
Availability: |
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Grown by enthusiasts. |
Description: |
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Small twining, low climbing vine. |
Height: |
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N/A; a vine with stems to 3 feet or more in length. |
Growth Rate: |
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Moderate. |
Range: |
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Eastern United States west to Texas and south to the Monroe County Keys; West Indies. |
Habitats: |
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Pinelands, hammocks and thickets. |
Soils: |
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Moist, well-drained sandy or limestone soils, with or without humusy top layer. |
Nutritional Requirements: |
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Low; it grows in nutrient poor soils. |
Salt Water Tolerance: |
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Low; does not tolerate long-term flooding by salt or brackish water. |
Salt Wind Tolerance: |
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Secondary line; tolerates significant salt wind without injury, but usually is somewhat protected. |
Drought Tolerance: |
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High; does not require any supplemental water once established. |
Light Requirements: |
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Full sun to light shade. |
Flower Color: |
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Bright pink fading to blue. |
Flower Characteristics: |
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Semi-showy. |
Flowering Season: |
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All year. |
Fruit: |
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Small brown pod (legume). |
Wildlife and Ecology: |
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Larval host plant for cassius blue (Leptotes cassius), ceraunus blue (Hemiargus ceraunus), gray hairstreak (Strymon melinus), silver spotted skipper (Epargyreus clarus) and zarucco duskywing (Erynnis zarucco) butterflies. |
Horticultural Notes: |
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Can be grown from seed. |
Comments: |
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This is a part of a confusing group with unstable taxonomy; this species was listed as Galactia regularis in Wunderlin & Hansen (2011) and for several years on the Atlas of Florida Vascular Plants. Plants in the Florida Keys and in the pine rocklands of Miami-Dade County are the closely related Galactia parvifolia, with narrow leaflets. For any Galactia species, we recommend using plants that were originally collected from near your project location. |
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George D. Gann, 2019. Ocean Ridge Hammock Park, Palm Beach County, Florida.
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