
Twice-Leaved Blackberry
rubus bifrons
The Twice-Leaved Blackberry (Rubus bifrons) is a vigorous, sprawling perennial shrub known for its arching canes and tasty, deep-purple to black fruits. Native to Europe but naturalized in many temperate regions worldwide, this resilient plant thrives in disturbed environments, forming dense, thorny thickets. These thickets provide excellent cover and nesting sites for small birds and mammals, though the plant's aggressive growth can sometimes overwhelm native vegetation. During the warm months, its showy blossoms serve as a rich nectar source for a variety of native pollinators, cementing its role as a key wildlife supporter.
Lebensraum: Typically found in disturbed sites, forest edges, riparian zones, old fields, and along roadsides in moist, well-drained soils.
Aussehen
This robust bramble features stout, arching canes that typically reach lengths of 1 to 6 meters, heavily armed with sharp, backward-curved prickles. Its palmately compound leaves are uniquely two-toned, displaying a smooth, dark green surface on top and a contrasting, felt-like, grayish-white underside. In late spring and summer, it produces clusters of five-petaled flowers ranging from white to light pink, which eventually develop into clusters of glossy, aggregate drupelets that turn black when fully ripe.

Kategorie
PflanzenSeltenheit
Common
Gefahr
1/5 · Sehr gering
Snaps
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Interessante Fakten
A single mature thicket of these blackberries can generate thousands of seeds annually, which can remain dormant in the soil for several years waiting for sunlight.
Historically, dense, thorny brambles like this species were purposefully planted around homesteads to serve as organic, impenetrable security fences.
The species name 'bifrons' literally translates to 'two-faced' or 'two-fronted,' describing the starkly contrasting dark green and bright white sides of its leaves.
Besondere Fähigkeiten
Bicolored Thermoregulation
The dense white hairs on the leaf undersides reflect excess solar radiation and reduce water loss through transpiration during hot days.
Canes Tip-Rooting
When the tips of its long, arching canes touch moist soil, they can quickly generate roots to establish new, independent clonal plants.
Armored Spines
Sharp, downward-curving prickles prevent herbivores from easily feeding on the foliage and assist the canes in climbing over surrounding vegetation.
Maße und Details
- Länge
- 100-600 cm
- Gewicht
- 1-15 kg
- Lebenserwartung
- 5-25 Jahre
Ernährung und Fütterung
This plant produces its own organic compounds using sunlight, water, and carbon dioxide through photosynthesis, while absorbing key minerals through its root system.
Hauptnahrung
- Sunlight
- Water
- Carbon dioxide
- Soil nitrogen
- Phosphorus
Ökologische Zusammenhänge
Western Honey Bee
Apis mellifera
The flowers provide an abundant source of nectar and pollen for foraging honey bees in exchange for pollination.
American Robin
Turdus migratorius
The ripe blackberries are eaten by robins, which then disperse the seeds throughout the landscape.
Raspberry Cane Borer
Oberea bimaculata
Larvae of this beetle tunnel into the woody canes, feeding on the pith and weakening the stalks.
Merkmale
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Sicherheit
Gefahr
1/5 · Sehr gering
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Häufig gestellte Fragen
Wie identifiziert man Twice-Leaved Blackberry?
Der einfachste Weg, Twice-Leaved Blackberry zu bestimmen, ist die Verwendung der Naturführer-App Snappit.
Was ist der/die/das länge von Twice-Leaved Blackberry?
100-600 cm
Was ist der/die/das gewicht von Twice-Leaved Blackberry?
1-15 kg
Was ist der/die/das lebenserwartung von Twice-Leaved Blackberry?
5-25 Jahre
Was frisst Twice-Leaved Blackberry?
This plant produces its own organic compounds using sunlight, water, and carbon dioxide through photosynthesis, while absorbing key minerals through its root system.
Wo findet man Twice-Leaved Blackberry normalerweise?
Typically found in disturbed sites, forest edges, riparian zones, old fields, and along roadsides in moist, well-drained soils.
Snap-Karte
Zoome hinein, um Cluster aufzulösen und zu sehen, wo dieses Objekt fotografiert wurde.
Neueste Snaps
Neueste Snaps erscheinen hier, wenn neue Beobachtungen hinzukommen.

















