FNPS Plant Database

Hypericum myrtifolium

myrtle-leaf St. John's-wort
  • Photo by: Shirley Denton, Suncoast Chapter FNPS

Nomenclature

Common Name:

myrtle-leaf St. John's-wort

Synonym(s):

Genus species:

Hypericum myrtifolium

Family:

Clusiaceae

Plant Specifics

Form:

shrub

Size:

ft

Life Span:

Long-lived perennial

Flower Color:

yellow

Fruit Color:

brown

Phenology:

Evergreen. Blooms predominantly in spring and summer.

Noted For:

Showy Flowers

Landscaping

Recommended Uses:

Considerations:

Availability:

Native Nurseries, Seed

Propagation:

Seed

Light:

Full Sun, Part Sun

Moisture Tolerance:

Always Flooded---------------------------------Extremely Dry

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Usually moist, occasional inundation -to- Not wet but not extremely dry

Salt Water Flooding Tolerance:

Unknown

Salt Spray/Salty Soil Tolerance:

Low/no tolerance of salty wind or direct salt spray

Soil or Other Substrate:

Sand

Soil pH:

Acidic to neutral

Suitable to Grow In:

8A,8B,9A,9B,10A,10B

USDA zones are based on the average annual extreme minimum winter temperature.



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Ecology

Wildlife:

Pollinators

Attracts pollinators, especially bees.

Foliage and seeds are food source for birds and mammals.

Native Habitats:

Seeps, wet prairies, wet flatwoods.

Natural Range in Florida:

Comments:

Ethnobotany:

General Comments:

Citations:

Huegel, Craig N. (2012). Native Wildflowers and Other Ground Covers for Florida Landscapes. University Press of Florida, Gainesville.


Osorio, Rufino. (2001). A Gardener's Guide to Florida's Native Plants. University Press of Florida, Gainesville.


VanHoek, Carmel. (2016). The Saints of Hillsborough County: The Genus Hypericum (blog post). ( https://fnpsblog.blogspot.com/2016/06/the-saints-of-hillsborough-county-genus.html ). Accessed 2026. Florida Native Plant Society.

Wunderlin, R. P., B. F. Hansen, A. R. Franck, and F. B. Essig. (1999+). Atlas of Florida Plants. ( https://florida.plantatlas.usf.edu/ ). [S. M. Landry and K. N. Campbell (application development), USF Water Institute.] Institute for Systematic Botany, University of South Florida, Tampa.

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