Wildflowers Active during the day

Bermuda buttercup

Oxalis pes-caprae

iNaturalist Wikipedia

Transforming backyards into vibrant carpets of gold, the Bermuda buttercup is a master of movement and a sure sign that spring has arrived.

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0 Habitats

Quick Identification

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Size

Height ranges from 10–30 cm (4–12 in); spreads via underground bulbs to cover large areas.

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Colors

Brilliant lemon-yellow flowers; trifoliate green leaves often featuring small purple or brown speckles.

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Key Features

Bright yellow funnel-shaped flowers with five petals
Clover-like green leaves often speckled with dark spots
Low-growing habit forming dense carpets in sunny areas

When You’ll See Them

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Activity pattern Active during the day

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Peak hours 10 AM - 4 PM

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Season January-April

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Diet As a primary producer, it creates energy through photosynthesis and absorbs water and minerals through a deep, bulbous root system.

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Habitat Commonly found in suburban gardens, lawns, orchards, roadsides, and coastal scrubland.

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Where Does the Bermuda buttercup Live?

Native to the Cape Region of South Africa, the Bermuda buttercup has become a world traveler, establishing itself across every continent except Antarctica. It is most dominant in Mediterranean-style climates, with massive populations blanketing coastal California, the Mediterranean basin, and parts of Southern Australia. Because it thrives in disturbed soil, it is frequently found in residential areas and agricultural lands where human activity has cleared the natural competition.

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8 Countries

1.2M km² Range

Least Concern Conservation

ZA South Africa US United States AU Australia IT Italy ES Spain Greece PT Portugal MX Mexico

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iNaturalist / Verified observation data

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Behavior

Bermuda buttercup is known for its remarkable nyctinasty—a 'sleep' movement where its flowers and leaves fold inward at night or during overcast weather to protect its pollen and reduce moisture loss. During the day, it reacts quickly to sunlight, unfurling its vibrant yellow petals to attract early-season pollinators like small bees and hoverflies.

Unlike many other plants, this species rarely produces viable seeds in its introduced range; instead, it reproduces aggressively through the production of numerous underground bulbils. These small bulbs are easily spread by garden activities, tilling, or burrowing animals, allowing the plant to colonize disturbed soil and garden beds with incredible speed. To humans, it is often viewed as a beautiful but persistent weed that signals the arrival of spring.

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Camera Tips

To capture the true beauty of the Bermuda buttercup, place your camera at a very low 'worm’s-eye' view. Setting your lens just a few inches above the ground allows you to look directly into the funnel-shaped flowers, creating a sense of scale and highlighting the delicate speckling on the leaves that is often missed from a standing height.

Because this species exhibits nyctinasty, it is a perfect subject for a daylight-to-nightfall timelapse. Set your camera to capture an image every 5 to 10 minutes from sunrise to sunset. This will reveal the dramatic 'waking up' and 'sleeping' movements as the plant reacts to the shifting light. Ensure your camera is secured to a low stake to prevent wind shake during these long sequences.

Lighting is critical for yellow flowers, which can easily 'blow out' and lose detail in harsh midday sun. Use a macro lens setting if available and try to shoot during the golden hours of late morning or early afternoon when the sun is bright enough for the flowers to be fully open but the light is soft enough to capture the texture of the petals. If using a trail camera, look for a spot that receives mottled sunlight through a tree canopy to create more depth in your photos.

Similar Species

Species that look similar or are commonly confused with Bermuda buttercup.

Creeping Woodsorrel

Much smaller flowers and a more prostrate, creeping growth habit compared to the upright stalks of the Bermuda buttercup.

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Frequently Asked Questions

The flowers are most active during bright, sunny hours, typically between 10 AM and 4 PM. They are nyctinastic, meaning they close tightly at night and remain shut during heavily overcast or rainy days.

In many regions, you don't need to do anything—it often arrives uninvited in disturbed soil. However, if you want to encourage it, ensure you have well-draining soil and a spot that receives full sun. Be warned: it spreads very rapidly and can be difficult to remove once established.

Bermuda buttercups are plants; they don't eat food in the traditional sense. They produce their own energy from sunlight via photosynthesis and draw water and nutrients like nitrogen and phosphorus from the soil through their bulbous root system.

Yes, they are exceptionally common in suburban gardens, parks, and roadsides. They thrive in 'disturbed' environments where the earth has been turned or garden beds have been prepared, making them a frequent sight in residential neighborhoods.

While the leaves look similar to clover, the Bermuda buttercup has much larger, funnel-shaped flowers that grow on long stems above the foliage. True clovers (Trifolium) have small, rounded flower heads made of many tiny tubular flowers, whereas Oxalis has distinct five-petaled blooms.

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