Spotted St. Johnswort (Hypericum maculatum) – Growing Guide, Care & Benefits | ePlant AI
Spotted St. Johnswort (Hypericum maculatum)
Spotted St. Johnswort (Hypericum maculatum) is a perennial herb with bright yellow flowers and distinctive spotted leaves, often found in meadows and open woodlands.
Hypericum maculatum, commonly known as Spotted St. Johnswort, is a perennial herbaceous plant belonging to the Hypericaceae family. This species is recognized for its distinctive physical attributes and its presence within specific ecological niches. It is a member of a genus that includes many well-known species, but Hypericum maculatum possesses its own unique characteristics that set it apart.
Physically, Hypericum maculatum typically grows to a height of 30 to 60 centimeters, though it can occasionally reach up to 90 centimeters. Its stems are erect and often branched, exhibiting a somewhat woody base in mature plants. The leaves are arranged oppositely along the stem and are sessile, meaning they lack a stalk. They are ovate to oblong in shape, measuring approximately 2 to 5 centimeters in length, and are characterized by numerous translucent dots, which are oil glands, visible when held up to the light. These dots are a key feature contributing to the common name. The flowers are a prominent feature, typically borne in terminal cymes. Each flower is about 2 to 3 centimeters in diameter and possesses five bright yellow petals, often with black dots or streaks along the margins. The stamens are numerous and fused into several bundles. The fruit is a capsule that matures into a dark brown or purplish color, containing numerous small seeds.
The native distribution of Hypericum maculatum is primarily across Europe, extending into parts of Western Asia. It thrives in a variety of natural habitats, often found in open woodlands, meadows, pastures, and along roadsides. It prefers well-drained soils and can tolerate a range of soil types, from sandy to loamy. While it can be found in disturbed areas, it is also a component of more natural grassland ecosystems. Cultivation requirements are generally straightforward, favoring sunny to partially shaded locations with adequate moisture.
Historically, plants within the Hypericum genus have been associated with various medicinal uses, and Hypericum maculatum is no exception, though its specific applications may differ from more widely recognized species. Scientific research has explored the phytochemistry of various Hypericum species, identifying compounds with potential biological activities. Ornamentally, its bright yellow flowers can add a cheerful splash of color to garden settings, particularly in naturalistic plantings or wildflower meadows. Its ecological role involves providing nectar and pollen for pollinators, contributing to the biodiversity of its native habitats.
An interesting characteristic of Hypericum maculatum, shared with other members of its genus, is the presence of glandular dots on its leaves and petals. These glands contain various secondary metabolites, which can contribute to the plant's defense mechanisms and its characteristic scent. The species' ability to colonize open and sometimes disturbed habitats suggests a degree of resilience and adaptability within its ecological niche.
Prefers at least 6 hours of direct sunlight daily for best flowering, but tolerates some shade.
Water
Moderate
Keep soil consistently moist but not waterlogged. Allow top inch to dry slightly between waterings.
Soil
Well-drained
Temperature
Moderate
Prefers average room temperatures between 18-24°C. Can tolerate cooler temperatures.
Fertilizer
Low
Feed lightly in spring with a balanced fertilizer. Avoid over-fertilizing.
Plant Overview
Plant Type
Herb
Plant Category
Ornamental
Plant Place Type
Garden, Pot
Lifespan
Perennial
Plant Height
0.3-0.6 m
Spread
0.3-0.6 m
Growth Rate
Moderate
Dormancy
Yes
Leaf Color
Green
Leaf Type
Simple
Flower Size
2-3 cm
Optimal Sunlight Lux
60000
Image Gallery
Flowering & Fruiting Cycles
Monthly activity intensity for bloom and fruit across both hemispheres.
Northern hemisphere
Flowering & fruiting calendar
Peak bloom · JulPeak fruit · Aug
FloweringFruiting
Southern hemisphere
Flowering & fruiting calendar
Peak bloom · DecPeak fruit · Jan
FloweringFruiting
Taxonomy
kingdomPlantae
divisionTracheophyta
classMagnoliopsida
orderMalpighiales
familyHypericaceae
genusHypericum
speciesHypericum maculatum
Toxicity
Toxic for humans
No
Rating: 0/5
Toxic for pets
No
Rating: 0/5
Non-toxic
Additional Care Tips
Water regularly to keep the soil consistently moist, especially during dry periods. Avoid waterlogged conditions, as this can lead to root rot. Allow the top inch of soil to dry out slightly between waterings for optimal health.
Prune in late winter or early spring before new growth begins. Remove dead, damaged, or crossing stems. Cut back by about one-third to shape the plant and encourage bushier growth, which leads to more abundant blooms.
Spotted St. Johnswort can be propagated by seed, division, or stem cuttings. Sow seeds in spring or autumn. Divide established clumps in spring or autumn. Take cuttings in summer and root them in moist soil or perlite.
Repot young plants annually or every two years in spring, moving them to a slightly larger container. Mature plants may only need repotting every 3-4 years. Use a well-draining potting mix. Ensure the new pot has adequate drainage holes.
FAQs
What are the ideal growing conditions for Spotted St. Johnswort?
Spotted St. Johnswort prefers full sun to partial shade and well-drained soil. It is adaptable to a range of soil types but thrives in moist, fertile conditions.
How tall does Hypericum maculatum typically grow?
Hypericum maculatum usually reaches a height of 30 to 60 centimeters.
When does Spotted St. Johnswort bloom?
Spotted St. Johnswort typically flowers from June to August.
Is Hypericum maculatum suitable for containers?
Yes, with adequate drainage and consistent moisture, Spotted St. Johnswort can be grown in containers.
Does Spotted St. Johnswort require much maintenance?
Generally, it is a low-maintenance plant. Deadheading spent flowers can encourage further blooming.