Hypericum x inodorum
Common Name(s):
- Phonetic Spelling
- hy-PEER-ih-kum in-OH-dor-um
- Description
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St. John's Wort is a fertile hybrid, a match between H. androsaemum and H. hircinum. The result is a deciduous, semi-evergreen shrub that grows to 3 to 5 feet high. The hybrid is noted for its beautiful foliage, showy flowers and decorative berries. The yellow flowers differ from H. androsaemum in having petals conspicuously longer than the sepals and styles and from H. hircinum by having sepals that are persistent into the fruiting stage. A number of × inodorum cultivars have been produced which primarily differ from each other in plant habit and fruit color.
Plant it in moist, well-drained soil in full sun to partial shade, though it will tolerate deep shade. It does not like wet feet so do not over water. It will self-seed in the landscape but it is not aggressive. It tolerates most soil types. Plants develop extensive root systems and will benefit from a thick root mulch in cold winter climates.
The genus name comes from the Greek words hyper meaning above and eikon meaning picture in reference to the practice of hanging flowers from this genus above images, pictures or windows. The hybrid name comes from the Latin word inodorus meaning "unscented" or "lacking fragrance".Diseases, Insect Pests, and Other Plant Problems:
No known diseases or insect pests.
- See this plant in the following landscape:
- Cultivars / Varieties:
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- 'Allgrandeur Miracle Grandeur'
- 'Elstead'
Four feet tall and five feet wide. Berries that emerge white, become pink, then bright red. - 'Hypearl Compact Red'
- 'Mystical Beauty'
- 'Allgrandeur Miracle Grandeur'
- 'Allgrandeur Miracle Grandeur', 'Elstead', 'Hypearl Compact Red', 'Mystical Beauty'
- Tags:
- Cultivars / Varieties:
-
- 'Allgrandeur Miracle Grandeur'
- 'Elstead'
Four feet tall and five feet wide. Berries that emerge white, become pink, then bright red. - 'Hypearl Compact Red'
- 'Mystical Beauty'
- 'Allgrandeur Miracle Grandeur'
- 'Allgrandeur Miracle Grandeur', 'Elstead', 'Hypearl Compact Red', 'Mystical Beauty'
- Tags:
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Attributes:
- Genus:
- Hypericum
- Species:
- Hypericum
- Family:
- Hypericaceae
- Life Cycle:
- Perennial
- Woody
- Recommended Propagation Strategy:
- Division
- Seed
- Country Or Region Of Origin:
- South West and South Central Europe
- Distribution:
- Parts of South America, Great Britain, Ireland
- Wildlife Value:
- Food source for wildlife.
- Dimensions:
- Height: 3 ft. 0 in. - 5 ft. 0 in.
- Width: 3 ft. 0 in. - 5 ft. 0 in.
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Whole Plant Traits:
- Plant Type:
- Shrub
- Woody Plant Leaf Characteristics:
- Deciduous
- Habit/Form:
- Clumping
- Dense
- Erect
- Growth Rate:
- Medium
- Maintenance:
- Low
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Cultural Conditions:
- Light:
- Deep shade (Less than 2 hours to no direct sunlight)
- Full sun (6 or more hours of direct sunlight a day)
- Partial Shade (Direct sunlight only part of the day, 2-6 hours)
- Soil Texture:
- Clay
- Loam (Silt)
- Sand
- Soil pH:
- Acid (<6.0)
- Alkaline (>8.0)
- Neutral (6.0-8.0)
- Soil Drainage:
- Good Drainage
- Moist
- Occasionally Dry
- NC Region:
- Coastal
- Mountains
- Piedmont
- USDA Plant Hardiness Zone:
- 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
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Fruit:
- Fruit Color:
- Pink
- Fruit Value To Gardener:
- Showy
- Display/Harvest Time:
- Fall
- Fruit Type:
- Berry
- Fruit Length:
- < 1 inch
- Fruit Width:
- < 1 inch
- Fruit Description:
- Flowers are followed by showy coral pink fleshy, berry-like fruits.
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Flowers:
- Flower Color:
- Gold/Yellow
- Flower Inflorescence:
- Cyme
- Flower Value To Gardener:
- Long Bloom Season
- Flower Bloom Time:
- Fall
- Summer
- Flower Petals:
- 4-5 petals/rays
- Flower Size:
- < 1 inch
- Flower Description:
- One-inch buttercup-yellow flowers in branched clusters bloom mid to late summer (July-September).
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Leaves:
- Woody Plant Leaf Characteristics:
- Deciduous
- Leaf Color:
- Green
- Leaf Value To Gardener:
- Fragrant
- Leaf Type:
- Simple
- Leaf Arrangement:
- Opposite
- Leaf Shape:
- Ovate
- Leaf Margin:
- Entire
- Hairs Present:
- No
- Leaf Length:
- 1-3 inches
- Leaf Width:
- < 1 inch
- Leaf Description:
- Stalkless, ovate, opposite leaves (to 2 inches long) are aromatic when crushed.
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Stem:
- Stem Is Aromatic:
- No
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Landscape:
- Landscape Location:
- Meadow
- Rock Wall
- Landscape Theme:
- Drought Tolerant Garden
- Garden for the Blind
- Shade Garden
- Design Feature:
- Border
- Hedge
- Attracts:
- Bees
- Pollinators
- Songbirds
- Resistance To Challenges:
- Drought
- Heavy Shade