Hypericum, Golden St. John's Wort, St. Johnswort 'Sunburst'

Hypericum frondosum

Family
Hypericaceae (hy-PER-ee-KAY-see-ee)
Genus
Hypericum (hy-PER-ee-kum)
Species
frondosum (frond-OH-sum)
Synonym
Sun Exposure
Sun to Partial Shade
Foliage
Deciduous
Height
36-48 in. (90-120 cm)
Spacing
36-48 in. (90-120 cm)
Hardiness
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
Bloom Color
Bright Yellow
Bloom Time
Mid Summer
Late Summer/Early Fall
Other Details
Category
Shrubs
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Blue-Green
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
Patent Information
Propagation Methods
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Regional

This plant is said to grow outdoors in the following regions:

San Leandro, California

Willimantic, Connecticut

Decatur, Georgia

Saint Charles, Illinois

Fort Wayne, Indiana

Lexington, Kentucky

Dracut, Massachusetts

Lexington, Massachusetts

Temperance, Michigan

Oxford, Mississippi

Washington, Missouri

Exeter, New Hampshire

San Antonio, Texas

Springfield, Virginia

Milwaukee, Wisconsin

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Gardener's Notes:

3
positives
0
neutral
0
negative
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M
Oxford, MS (Zone 7b) | December 2022 | positive

This plant is semi-evergreen for me in zone 7B, north Mississippi. It has blue-green foliage and looks great all summer, never wilting in...Read More

A
A
Willimantic, CT | June 2010 | positive

We received this shrub bare-rooted, in deep dormancy as a freebie when we mail ordered plants more than 15 years ago. It was about 6 inc...Read More

F
(bestest fairy)Temperance, MI (Zone 5b) | November 2007 | positive

Mine started blooming in the end of June & bloomed for a month straight!! Very prolific bloomer with anywhere from 5 -12 blooms at a time...Read More

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