Whorled yellow loosestrife (Lysimachia quadrifolia)

Whorled yellow loosestrife

Also known as: Whorled loosestrife, Crosswort

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.

Scientific classification

Species

Whorled yellow loosestrife (Lysimachia quadrifolia)

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Perennial

Lifespan

Herb

Plant Type

Late spring, Summer, Early fall

Bloom Time

30 cm to 1.02 m

Plant Height

Green, Blue

Leaf Color

5 - 32 ℃

Ideal Temperature

Summer

Growth Season

Images of Whorled yellow loosestrife

Quickly Identify Whorled yellow loosestrife

Whorled leaf arrangement around central stem.

Bright yellow flowers with red center.

Star-shaped flowers with dark-streaked resin canal.

Slightly pubescent, unbranched green stem.

Globe-shaped seed capsule with smooth, parchment-like texture.

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Care Guide for Whorled yellow loosestrife

Every week

Water

Partial sun

Sunlight

5 - 32 ℃

Ideal Temperature

Water: Whorled yellow loosestrife prefers consistently moist soil akin to its woodland origins and has moderate drought tolerance. Weekly watering is beneficial for hydration, and its growth cycles align with water availability, thriving particularly during the wetter growing season.

Fertilize: For whorled yellow loosestrife, monthly application of diluted balanced fertilizers during spring and summer promotes healthy growth. Reduce feeding in autumn as whorled yellow loosestrife prepares for dormancy. Always water before fertilizing to protect roots and adjust feeding based on whorled yellow loosestrife's response for optimal vitality.

Pruning: Whorled yellow loosestrife has whorled leaves and yellow flowers. Prune in early to late spring to remove damaged stems and promote healthy growth. Cut back up to one-third for shape and air circulation, using sterilized tools to prevent infection, leading to robust blooms and stronger structure.

Propagation: Whorled yellow loosestrife is a hardy perennial that propagates effectively by division during dormancy, ensuring strong roots for new plants. Replant divisions at the same depth, with regular watering and partial to full sun exposure promoting robust growth.

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Images of Whorled yellow loosestrife

Quickly Identify Whorled yellow loosestrife

Care Guide for Whorled yellow loosestrife

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