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Large yellow loosestrife

How to identify Large yellow loosestrife (Lysimachia punctata)

Large yellow loosestrife, also known as Spotted loosestrife

Large yellow loosestrife is characterized by its robust, erect stature, often reaching about 3 feet (91 cm) in height. It forms expansive clumps with rhizomatous roots. The leaves of this perennial are whorled, providing a distinctive look. In late spring through fall, large yellow loosestrife produces a striking display of yellow flowers, each accented by an orange-red center, atop spikes. This plant thrives in moist, well-drained soils and prefers full sun to partial shade environments.

Lifespan

Lifespan: Perennial, Annual

Plant Type

Plant Type: Herb

Leaf Type

Leaf Type: Deciduous

Quickly Identify Large yellow loosestrife

1

Robust, erect stature, reaching 3 feet (91 cm) height.

2

Whorled leaves, lance to ovate-shaped, deep green.

3

Yellow cup-shaped flowers with orange-red center, blooms May-September.

4

Distinctive vein pattern on smooth-textured leaves.

5

Flowers have fine hairs on petals and bloom on spikes.

Large yellow loosestrifeLarge yellow loosestrifeLarge yellow loosestrifeLarge yellow loosestrifeLarge yellow loosestrife

Detailed Traits of Large yellow loosestrife

Leaf Features

The lance to ovate-shaped leaves of large yellow loosestrife are approximately 3 inches (7.6 cm) long. They grow in whorls of 3 or 4 leaves around the stem. The leaves are a deep green, smooth in texture, and exhibit a clearly defined vein pattern. Their arrangement in whorls is a key identifying feature. These leaves are notable for their symmetry and glossy surface, enhancing the plant's attractive foliage.

Leaf Arrangement

Whorled

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Flower Features

Large yellow loosestrife's flowers are cup-shaped and measure approximately 1 inch (2.5 cm) across. They feature five bright yellow petals with an orange-red center and fine hairs on the petals. The flowers are arranged on spikes and bloom on short pedicels in the leaf axils. Their blooming season spans from May to September, providing a captivating display throughout the summer months.

Large yellow loosestrife Flower image
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Large yellow loosestrife and Their Similar Plants

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Creeping jenny vs. Large yellow loosestrife: What's The Difference?
The Latin name Lysimachia nummularia means "like a coin", giving the additional common names of herb twopence or twopenny grass. The creeping jenny works well as a groundcover and can be used in a bog garden.
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Gooseneck loosestrife vs. Large yellow loosestrife: What's The Difference?
Gooseneck loosestrife is a strong, clump-forming perennial with arching flower spikes that resemble the neck of a goose. This plant's leaves, which are native to China, are utilized in various culinary preparations. This plant is commonly used by florists for cut flower arrangements and grows easily in humus-rich, moist conditions.
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Fringed loosestrife vs. Large yellow loosestrife: What's The Difference?
Fringed loosestrife (Lysimachia ciliata) is a flowering perennial plant that grows best in full sunlight or partial shade. When cultivated, fringed loosestrife should be planted in rich, moist soil. It is often planted as ground cover in shaded areas and attracts bees. The common name references the plant's supposed power to soothe animals of their strife.
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Whorled yellow loosestrife vs. Large yellow loosestrife: What's The Difference?
Whorled yellow loosestrife, or Lysimachia quadrifolia, is a member of the Primrose family. This perennial has star-shaped, yellow blooms with red accents. Some say that early colonists in Sicily fed these plants to oxen, so they would work together more peacefully.
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Dense-flowered loosestrife vs. Large yellow loosestrife: What's The Difference?
Sometimes the most attractive aspects of a plant are reflected in its name. In the case of dense-flowered loosestrife, the common name, as well as the Latin name's specific epithet, congestiflora, translates as "congested flowers" - referring to the plant's beautiful yellow flowers that appear in clusters. Due to its decorativeness, it is featured in gardens.
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Key Facts About Large yellow loosestrife

Attributes of Large yellow loosestrife
Lifespan
Perennial, Annual
Plant Type
Herb
Plant Height
15 cm to 1 m
Spread
30 cm to 45 cm
Leaf Color
Green
Flower Size
2.5 cm
Flower Color
Yellow
Stem Color
Red
Leaf type
Deciduous
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Scientific Classification of Large yellow loosestrife

Family
Primrose
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Species
Large yellow loosestrife (Lysimachia punctata)
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Distribution Map of Large yellow loosestrife

Large yellow loosestrife is native to moist and sunny habitats in southern and eastern Europe, North America, and western Asia. It has also been introduced to much of the rest of Europe. It is normally found along creeks and ditches.
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
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