Field thistle (Cirsium discolor)

Field thistle

The Cirsium discolor is an American natives biennial or perennial herb that reaches up to 2 m tall. The field thistle's flowers are large and showy, which produce a good amount of nectar and pollens. It is an important food source of bees and butterflies. The young leaves and stems can be boiled and served as edible greens.

Scientific classification

Species

Field thistle (Cirsium discolor)

Asters bellflowers fanflowers and allies

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Weeds

Weed or not

Herb

Plant Type

Summer, Early fall

Bloom Time

Early fall, Mid fall

Harvest Time

91 cm to 2 m

Plant Height

30 cm

Spread

Green, White

Leaf Color

2.5 cm to 5 cm

Flower Size

Brown

Fruit Color

Pink, Purple, White, Red

Flower Color

Green, White

Stem Color

Winter dormancy

Dormancy

Images of Field thistle

Culture

Symbolism

Strength, Protection, Hex Breaking

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Quickly Identify Field thistle

Basal rosette structure initially

Flowerheads with green bracts resembling fish scales

Achene with tuft of fine, fluffy hairs (pappus) for wind dispersal

Pinnately lobed leaves with spiny margins

Hairiness and lack of spines on stem

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Care Guide for Field thistle

Every week

Water

Full sun

Sunlight

20 - 35 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Originating from temperate regions, field thistle thrives in moderately moist environments and prefers consistent hydration without waterlogging. Weekly watering supports its health, while supplemental watering during dry spells enhances flowering and growth throughout the season.

Fertilize: Field thistle requires balanced fertilizers with equal nitrogen, phosphorus, and potassium for optimal growth. Apply a quarter-strength solution every 4-6 weeks from spring to late summer, stopping in winter. Water thoroughly after fertilization to distribute nutrients and avoid root burn.

Pruning: Field thistle features tall, spiny stems and purple flowers. Prune in early spring by removing dead or damaged stems, which encourages bushier growth and blooms. Regular pruning enhances airflow, reduces spread, and ensures a healthier appearance throughout the growing season.

Propagation: Field thistle propagates best by sowing seeds in Spring. Successful propagation is marked by seedling emergence and healthy growth, supported by proper soil preparation and consistent moisture.

Repotting: Repot field thistle every 2-3 years in early spring, using a deep pot for taproot growth. Use well-drained soil and maintain consistent moisture. A larger container enhances flowering and reduces stress. Handle field thistle with care, as its spiny foliage may necessitate gloves.

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Images of Field thistle

Culture

Quickly Identify Field thistle

Care Guide for Field thistle

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