Plants Active during the day

creeping Jenny

Lysimachia nummularia

iNaturalist Wikipedia

A shimmering carpet of coin-shaped leaves and sun-yellow blooms, creeping Jenny turns damp garden corners into vibrant wildlife runways. This resilient perennial is a master of the moist ground, providing essential cover for backyard critters.

0 Sightings

0 Habitats

Quick Identification

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Size

Height of 5-10 cm (2-4 inches); trailing stems can reach 30-90 cm (1-3 feet) in length

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Colors

Bright lime-green to emerald-green foliage with cup-shaped, brilliant yellow flowers

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Key Features

Opposite, coin-shaped (orbicular) leaves
Low-growing, mat-forming creeping stems
Bright yellow five-petaled flowers blooming in leaf axils
Smooth, hairless stems that root at the nodes

When You’ll See Them

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Activity pattern Active during the day

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Peak hours 9 AM - 5 PM

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Season May-August

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Diet Autotrophic; produces its own food via photosynthesis using sunlight, water, and soil nutrients, with a high requirement for nitrogen-rich, moist soil.

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Habitat Wet meadows, riverbanks, damp woodlands, ditches, and moist suburban gardens or lawns.

public Geographic range

Where Does the creeping Jenny Live?

Creeping Jenny is native to the temperate regions of Europe and Western Asia, where it is a common sight in naturally damp river valleys and deciduous forests. It has been widely introduced to North America as an ornamental plant and has naturalized across most of the United States and Southern Canada, frequently appearing in the wild near human settlements. It also maintains established populations in parts of New Zealand and Australia, thriving anywhere that offers consistent ground moisture and partial shade.

Basemap © OpenStreetMap contributors

8 Countries

22.5M km² Range

Least Concern Conservation

GB United Kingdom US United States CA Canada DE Germany FR France Russia Turkey NZ New Zealand

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iNaturalist / Verified observation data

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Behavior

Creeping Jenny is a vigorous perennial groundcover known for its 'prostrate' growth habit, meaning it crawls along the soil surface rather than growing upright. It spreads primarily through stolons—horizontal stems that take root at various points (nodes) whenever they touch moist earth. This allows a single plant to quickly colonize large areas, forming a dense, living carpet that suppresses other weeds but can also become aggressive in the right conditions.

While it is largely stationary, its 'behavior' is most evident in its response to moisture and light. The plant is a hydrophyte, showing a strong preference for wet environments and often leaning toward water sources. During the summer months, it produces a flush of nectar-filled flowers that serve as a significant resource for specialized bees and hoverflies, making it a micro-hub of activity in a backyard ecosystem.

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Camera Tips

Capturing the growth of creeping Jenny requires a different approach than filming moving wildlife. Use a camera with a dedicated macro mode or a close-focusing lens and mount it on a ground-level stake or a low-profile tripod. Because the plant only grows a few inches tall, the best shots are taken from a 'frog's eye view,' looking across the mat of leaves toward the flowers. This angle emphasizes the 'moneywort' shape of the leaves and provides a cinematic look at the yellow blooms.

For the best results with an AI-powered camera, set it to a time-lapse mode during the peak growing season of June and July. Positioning the camera to take one photo every hour during daylight can create a fascinating video of the stems 'inching' across the soil and the flowers opening and closing in response to the sun. If you want to capture the animals that visit creeping Jenny, place your camera near a flowering patch on a sunny morning. The bright yellow flowers are a magnet for pollinators like the Macropis bee, which collects oils and pollen specifically from Lysimachia species.

Since creeping Jenny thrives in very wet areas, lens fogging can be an issue. Ensure your camera housing is well-ventilated or use anti-fog inserts. If you are placing a trail camera in a damp garden or near a creek to catch wildlife using the plant as cover, angle the camera slightly downward from a height of 12 inches. This allows you to see small amphibians like toads or salamanders that often hide beneath the cool, damp leaves of the creeping Jenny mat during the heat of the day.

Similar Species

Species that look similar or are commonly confused with creeping Jenny.

Ground Ivy

Features scalloped, kidney-shaped leaves and purple flowers rather than round leaves and yellow flowers.

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Frequently Asked Questions

Creeping Jenny flowers are most active during the brightest parts of the day, typically between 10 AM and 4 PM, when they fully open their petals to attract sun-loving pollinators like bees and hoverflies.

To attract wildlife, keep the plant well-watered so it forms a thick, cool mat. This provides a perfect humid microclimate for beneficial insects, frogs, and toads. The nectar-rich yellow flowers will naturally attract local pollinators during the summer months.

As a plant, creeping Jenny doesn't 'eat' in the traditional sense; it uses photosynthesis to convert sunlight into energy. It thrives on moist, nutrient-rich soil, particularly favoring areas with high organic matter and consistent water.

Yes, creeping Jenny is very common in suburban areas. It is frequently used in landscaping for hanging baskets and groundcover, and often escapes into damp lawns, ditches, and shaded garden borders.

You can tell them apart by the leaf shape and flowers. Creeping Jenny has smooth, round, 'coin-like' leaves and bright yellow flowers, while ground ivy (Glechoma hederacea) has scalloped, kidney-shaped leaves and small purple, funnel-shaped flowers.

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