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Gentiana clausa

Bottle Gentian / Closed Gentian

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Dark green leaves form an upright plant through most of the summer months, creating a great background for other spring and summer flowers.  Come late summer, large buds form on the stem tips and deep blue-violet flowers bloom throughout September. Great massed to create cover for many critters.

Benefits

  • Unique, deep blue flowers in late summer and fall
  • Petals never open so the flower looks like a bud
  • Bumblebees are strong enough to push past the closed petals
  • Foliage and roots are bitter-tasting, herbivores leave it alone
  • Slow growing but long lived perennial
  • Once established, needs little care

Homeowner Growing and Maintenance Tips

Prefers well-drained soils and part shade to full sun with slightly acidic to alkaline soils.


Height
18-24 Inches

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Spread
18-24 Inches

USDA Hardiness Zone 3-7

Native Range

Moist woods from Quebec south to Tennessee and North Carolina

Native Trivia

Rain gardens are a useful way for homeowners as well as businesses to reduce runoff. Water is captured by a rain garden's appropriate native plants giving it a chance to slowly filter into the ground, reducing erosion and waterway pollution.

Good Companions
Lady Fern (Athyrium filix-femina), Mist Flower/Hardy Ageratum (Eupatorium coelestinum), Cardinal Flower (Lobelia cardinalis), Woodland Aster (Aster divaricatus)

Characteristics & Attributes

Shade
Beneficial insects
Deer Resistant
Wet Sun
Fall Color
Plan Sub Group
Low Perennials
Exposure
Filtered Shade
Soil
Acidic
Well-drained
Soil Moisture Preference
Moist
Moist but well-drained
Attracts Wildlife
Amphibians
Mammals
Bloom Time
Fall
Late Summer
Critter Resistance
Rabbit Resistant
Native Habitat
Forest
Foliage Color
Dark Green
Uses
Border
Mass plant
Naturalizes
Native to
Connecticut
District of Columbia
Maine
Maryland
Massachusetts
New Hampshire
New Jersey
New York
North Carolina
Ohio
Pennsylvania
Rhode Island
Tennessee
Vermont
Virginia
West Virginia