Kalm's St. John's-wort
ExplorePlants
Kalm's St. John's-wort
Hypericum kalmianum
Kalm's St. John's-wort is a bright yellow flower that blooms in summer. It has pretty petals and is loved by butterflies and bees!
Habitat: Grasslands
Appearance
The Kalm's St. John's-wort is a small, bushy shrub featuring abundant, cheerful yellow flowers with five petals and a burst of long, prominent stamens. Its narrow, lance-shaped leaves are bright green and often have tiny translucent dots, making it distinct from other shrubs.
KingdomPlantaePhylumTracheophytaClassMagnoliopsidaOrderMalpighialesFamilyHypericaceaeGenusHypericum
Category
PlantsRarity
Common
Danger
1/5 · Very low
Snaps
Be the first to snap!
Interesting facts
After blooming, it forms cool, woody seed capsules that look like tiny bells!
Its cheerful yellow flowers can actually close up at night or on cloudy days!
Its leaves have tiny, see-through dots you can spot when held to light!
Named after Pehr Kalm, a Swedish explorer who studied North American plants!
Special abilities
Ability
Pollinator Beacon
Kalm's St. John's-wort has bright yellow flowers with numerous stamens that act like a glowing target, guiding busy bees to nectar.
Ability
Water-Wise Roots
Its adaptable root system helps it survive by finding moisture in diverse soils, tolerating both some drought and dampness.
Ability
Winter Armor
This woody perennial can shed its leaves but regrows vigorously in spring, allowing it to withstand cold winters.
Measurements & details
- Height
- 30-90 cm
- Spread
- 30-90 cm
- Flower Size
- 2-3 cm
- Bloom Season
- Late Spring to Late Summer
- Edible
- No
- Toxicity
- Mild
- Lifecycle
- Perennial
- Pollination Method
- Insect
Ecological connections
pollinates
Honey Bee
Apis mellifera
Gathers nectar and pollen from its sunny blooms.
pollinates
Common Eastern Bumble Bee
Bombus impatiens
Visits flowers for nectar, helping pollen move.
pollinates
Drone Fly
Eristalis tenax
Looks like a bee while visiting flowers for sweet nectar.
Traits
Flowering
Flowering plants are any plants that produce flowers as part of their reproductive cycle.
Summer Blooming
Summer blooming plants produce their flowers during the summer season, often providing vibrant color when many other plants have finished.
Fragrant Flower
Fragrant flowers emit a pleasant aroma, often to attract pollinators or for defense.
Medicinal
Medicinal plants possess chemical compounds that can be used for therapeutic purposes to treat illnesses or maintain health.
Edible
Edible plants are those parts of a plant that are considered safe for human consumption.
Grassland
Grassland habitats are terrestrial biomes dominated by grasses and herbaceous plants, supporting a variety of grazing animals.
Pollinator Magnet
Describes plants that are particularly attractive and beneficial to a wide range of pollinating organisms.
Also known as
No aliases listed yet.
Collections
Safety
Danger
1/5 · Very low
Always look but don't touch plants unless you know they are safe.
Frequently Asked Questions
How to identify Kalm's St. John's-wort?
The easiest way to identify Kalm's St. John's-wort is to use the Snappit nature identifier app.
How tall is Kalm's St. John's-wort?
30-90 cm
How wide does Kalm's St. John's-wort spread?
30-90 cm
How big are the flowers on Kalm's St. John's-wort?
2-3 cm
When does Kalm's St. John's-wort bloom?
Late Spring to Late Summer
Is Kalm's St. John's-wort edible?
No
Is Kalm's St. John's-wort toxic?
Mild
What is Kalm's St. John's-wort's lifecycle?
Perennial
Snap Map
Zoom in to split clusters and explore where this object has been snapped.
Loading map…
Recent Snaps
Recent snaps will appear here as new observations are added.
