Smoothbark St. John's-wort
Hypericum lissophloeus
Hypericaceae


Landscape Uses:

Pond shores.

Ecological Restoration Notes:

Availability:
Rarely grown by native plant nurseries.
Description:
Erect shrub 6 feet tall with exceedingly fine needle-like foliage. Branches are weeping with bark almost black on young plants and silvery gray on older plants. Golden yellow flowers with prominent stamens.
Height:
Typically 6 feet in height, taller than broad.
Growth Rate:
Range:
Endemic to Florida, Washington and Bay counties.
Habitats:
Pond margins and sinks.
Soils:
Wet to moist, moderately well-drained to poorly drained organic soils.
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:
Low; salt wind may burn the leaves.
Drought Tolerance:
Low; requires moist to wet soils and is intolerant of long periods of drought.
Light Requirements:
Full sun to light shade.
Flower Color:
Yellow.
Flower Characteristics:
Showy.
Flowering Season:
Late spring-fall.
Fruit:
Wildlife and Ecology:
Attracts pollinators.
Horticultural Notes:
Comments:
Endangered. We have been adding data for this species for central and northern Florida and welcome any feedback or review. If you would like to contribute information or images, please contact George Gann via the IRC staff page.