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PlantSnap
Plant Care
St. john’s wort
(Hypericum monogynum)
Also Known As
St. john’s wort, Single fruit st. john's wort, One-seeded st. john's wort
About This Plant
Hypericum monogynum is a flowering plant species that belongs to the Hypericaceae family. It is a small shrub that can grow up to 3 feet (91 cm) tall. The leaves are oblong and the flowers are yellow with five petals. It blooms in the summer.
Plant Care Instructions
Outdoor Size Range
1-3 feet (30-91 cm)
Light Requirements
Hypericum monogynum requires full sun to partial shade. It can tolerate some shade, but flowering will be reduced.
Humidity Needs
It doesn't have any specific humidity requirements.
Fertilizing Schedule
It doesn't require a lot of fertilizer. A balanced fertilizer once a year in the spring is enough.
Pruning Guidelines
Prune in the spring to remove dead or damaged branches. You can also prune to shape the plant.
Common Pests and Diseases
Hypericum monogynum is relatively pest-free, but it can be affected by spider mites and aphids.
Indoor Size Range
N/A
Watering Schedule
It prefers moist soil, but can tolerate some drought. Water regularly, especially during hot and dry periods.
Temperature Range
It can tolerate a wide range of temperatures, from -10 to 100°F (-23 to 38°C).
Growing Season
Hypericum monogynum blooms in the summer.
Growing Difficulty Level
Hypericum monogynum is easy to grow and maintain.
USDA Hardiness Zones
Hypericum monogynum is hardy in USDA zones 5-9.
Did You Know?
Hypericum monogynum has been used in traditional medicine to treat depression and anxiety. It contains hypericin, which is a natural antidepressant.
