Hypericum Species, Atlantic St. Johnswort, St. John's Wort, St. Johnswort

Hypericumtenuifolium

Family
Hypericaceae (hy-PER-ee-KAY-see-ee)
Genus
Hypericum (hy-PER-ee-kum)
Species
tenuifolium (ten-yoo-ih-FOH-lee-um)
Synonym
Hypericum fasciculatum var. laxifolium
Hypericum reductum
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Evergreen
Herbaceous
Height
6-12 in. (15-30 cm)
12-18 in. (30-45 cm)
Hardiness
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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Bloom Color
Bright Yellow
Bloom Time
Mid Spring
Late Spring/Early Summer
Mid Summer
Blooms repeatedly
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Requires consistently moist soil; do not let dry out between waterings
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
Patent Information
Non-patented
Propagation Methods
Seed Collecting
Regional

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

Birmingham, Alabama

Sonora, California

Oldsmar, Florida

Canton, Georgia

Centerville, Iowa

Andover, Minnesota

Sag Harbor, New York

Mogadore, Ohio

Wellington, Ohio

Madison, Tennessee

Bellevue, Washington

Charleston, West Virginia

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Gardener's Notes:

0
positive
0
neutral
0
negative
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Featured
Posticata fly
(Mallota posticata)
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(Dendropicos fuscescens)
Featured
Posticata fly
(Mallota posticata)
Cardinal Woodpecker
(Dendropicos fuscescens)