Myrtleleaf St. Johnswort

Hypericum myrtifolium

Myrtleleaf St. Johnswort

Laura Gaudette

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Hypericaceae
Genus:
Hypericum
Species:
Hypericum myrtifolium

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub , Subshrub
Height:
3-4 ft
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
apr, may, jun
Bloom Colors:
Yellow
Landscaping Shrub:
Yes

Native Range

United States: Alabama, Florida, Georgia, Mississippi, South Carolina

Keystone Species Ranking

Caterpillar Keystone:
★★★☆☆ Based on number of butterfly and moth species using this genus as host plant (Source: National Wildlife Federation)

Host Plant for Caterpillars

friendly probole (Probole amicaria)

Soil Requirements

Soil Type:
sandy, acidic, nutrient-poor soil
pH:
5.5 - 6.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
consistently moist
Notes:
Commonly found in wet pine flatwoods and savannas.