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bittersweet nightshade

Solanum dulcamara

iNaturalist Wikipedia

A striking climber known for its star-shaped purple blooms and jewel-like red berries, Bittersweet Nightshade adds a splash of dramatic color to backyard edges.

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Quick Identification

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Size

A scrambling vine reaching 1 to 4 metres (3 to 13 feet) in length, often forming dense thickets.

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Colors

Deep green foliage; vibrant purple flowers with prominent yellow centers; berries that transition from green to bright orange and finally scarlet red.

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Key Features

Star-shaped purple flowers with swept-back petals and a yellow cone
Heart-shaped leaves often with two smaller lobes at the base
Clusters of egg-shaped, glossy red berries
Woody base with herbaceous climbing stems

When You’ll See Them

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Activity pattern Active day and night

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Peak hours Growing and flowering during daylight hours; fruit remains visible 24/7

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Season Flowering from May to September; berries most prominent August to October

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Diet As a photoautotroph, it produces energy through photosynthesis using sunlight, water, and carbon dioxide, while drawing minerals from moist, nitrogen-rich soil.

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Habitat Commonly found in moist soils, woodland edges, fencerows, marshes, and suburban gardens where it can climb.

Behavior

Bittersweet Nightshade is a resilient, perennial vine that uses other plants or structures for support, though it can also grow as a low-lying groundcover. It is famous for its 'buzz pollination' mechanism, where bumblebees vibrate their wing muscles at a specific frequency to release pollen from the flower's yellow anthers. Despite its delicate beauty, the plant is moderately toxic to humans and livestock due to the presence of solanine.

In the backyard ecosystem, this plant acts as a bridge between seasons. Its long-lasting berries provide a vital food source for many bird species during the late summer and autumn when other food sources may be scarce. While it can be aggressive in garden settings, it serves as an important host and nectar source for specialized insects.

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Camera Tips

To capture the stunning transformation of Bittersweet Nightshade, set your camera to a time-lapse mode during the late spring. Aim your lens at a cluster of buds; within a few days, you'll record the dramatic 'sweeping back' of the purple petals. Because the stems are thin, ensure your camera is mounted on a stable post rather than a swaying branch to avoid motion blur.

If you are looking to capture wildlife interactions, focus your camera on the ripening red berries during the early morning hours in late August. This is the peak time for foraging birds. Use a high-speed trigger setting or a short-interval photo burst, as birds like cedar waxwings and thrushes move quickly when plucking berries from the vine.

For the best lighting, position your camera facing north or south to avoid the direct glare of the sun through the translucent berries. Backlighting in the late afternoon can make the scarlet fruit appear to glow, creating professional-quality images. If your camera has a macro setting or a close focal range (within 1-2 feet), use it to capture the intricate details of the yellow 'beak' inside the purple flowers.

Similar Species

Species that look similar or are commonly confused with bittersweet nightshade.

American Bittersweet

Unlike the nightshade, this is a woody vine with orange hulls that split to reveal red seeds, and it lacks the purple star-shaped flowers.

Black Nightshade

Produces white flowers instead of purple, and the mature berries are black rather than red.

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Frequently Asked Questions

Yes, Bittersweet Nightshade contains solanine and other alkaloids that are toxic to dogs, cats, and humans if ingested. It can cause gastrointestinal distress and more serious symptoms if consumed in large quantities.

Bittersweet Nightshade has purple star-shaped flowers and bright red berries in clusters. Deadly Nightshade (Atropa belladonna) has bell-shaped brownish-purple flowers and large, individual shiny black berries.

Several species of birds, including cedar waxwings, American robins, and various thrushes, eat the berries. They are largely immune to the toxins that affect mammals and help spread the seeds.

In many parts of North America, it is considered an introduced or invasive weed because it grows rapidly and can outcompete native vegetation in moist environments.

Historically, it was used in folk medicine for skin conditions (hence the name 'felonwort'), but due to its toxicity, it is not recommended for home use or consumption.

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