Purple milkwort (Polygala sanguinea)

Purple milkwort

Also known as: Blood milkwort

Purple milkwort (Polygala sanguinea) is found throughout much of eastern North America. It roots in wet, acidic, and relatively poor soils such as those in prairies and other open fields that get full sun. Purple milkwort blooms from mid-summer to early autumn, and the flowers may be purple, pink, white, or a combination thereof.

Scientific classification

Species

Purple milkwort (Polygala sanguinea)

Legumes, milkworts and allies

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Annual

Lifespan

Herb

Plant Type

Spring, Summer, Fall

Bloom Time

10 cm to 30 cm

Plant Height

2.5 cm

Flower Size

20 - 35 ℃

Ideal Temperature

Images of Purple milkwort

Distribution of Purple milkwort

Distribution Map

Purple milkwort is native to the eastern regions of North America. Over time, it has spread to various parts of the eastern continent, beyond its original range. The plant thrives in temperate zones but has not become widespread globally.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Damp grasslands

Hemisphere Trend Curve

Northern

Sorthern

Care Guide for Purple milkwort

Every week

Water

Full sun

Sunlight

20 - 35 ℃

Ideal Temperature

Water: Purple milkwort thrives in moisture-rich environments, requiring consistent soil moisture without waterlogging. Watering once a week supports its hydration needs. Primarily grown outdoors, purple milkwort benefits from natural rainfall and seasonal changes that are essential during its active growth period.

Fertilize: Purple milkwort thrives with periodic fertilization. In early spring, apply a balanced, slow-release fertilizer for growth, followed by monthly high-nitrogen applications during the growing season. Avoid over-fertilization and winter application, watering thoroughly after to enhance nutrient absorption and prevent salt buildup.

Pruning: Purple milkwort features striking purple flowers and compact growth. Pruning in early to late spring removes dead stems and promotes air circulation, leading to fuller blooms. Regular trimming after flowering helps shape purple milkwort and prepares it for the next growth cycle.

Propagation: Purple milkwort is a perennial herb that propagates through seed. Surface sowing is essential for germination, requiring light and a well-draining soil to prevent waterlogging. Gently pressing seeds into the substrate and maintaining moisture and stable temperature aid sprouting, which may take time.

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