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Seeds - Swamp Aster

Symphyotrichum puniceum

Minimum 200 semences par enveloppe

Sale price

Regular price $4.25
( / )
Format

Semences par gramme: 3 450

Année de récolte: 2024


Catégories: bandes riveraines, indigène, médicinale, nectarifère, nouveauté, résiste aux cerfs, vivace,

Aire de répartition indigène: BC, AB, SK, MB, ON, QC, NB, PE, NS, NL, NT,

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For successful seedlings,
see the growing notes at the bottom of the page!

Swamp aster (Symphyotrichum puniceum), also called purple-stemmed aster, is an elegant perennial that can reach heights of up to 150 cm. What sets it apart are its stunning purple flowers that bloom in late summer and early autumn. The flower heads, which can reach up to 4 cm in diametre, are composed of numerous fine petals surrounding a golden center. The long, narrow leaves are serrated and grow along upright stems, often slightly hairy. Swamp aster thrives in rich, moist soils, typically in full sun, and can be found in a variety of habitats, such as wet prairies and forest edges.

Ecological Role
Swamp aster plays a crucial role in its ecosystem by providing an essential source of nectar for pollinators. Its flowers particularly attract bees and butterflies, contributing to the pollination of many other plants. By naturalizing in gardens and prairies, swamp aster helps stabilize soils and enrich biodiversity. Its presence in wet habitats also makes it a valuable plant for ecological restoration projects.

 

Swamp aster seeds require cold stratification to ensure germination. See the cultivation notes below for more details.

Akène cannot assume any responsibility for the use of plants for therapeutic purposes. Always seek advice from a professional before using a medicinal or edible plant.

Growing Notes | Seeds - Swamp Aster

Swamp aster seeds require cold stratification to promote germination. Place the seeds in a mixture of moist sand and refrigerate them for about 30 days. After this period, sow the seeds on the surface of light, well-drained potting soil. Germination can take 15 to 30 days.

This plant prefers a location in full sun to partial shade and requires rich, moist, and well-drained soils. Once established, Swamp aster needs little maintenance. Regular watering is advisable during dry periods while avoiding excess moisture. Generally, it is resistant to diseases, but it is good to monitor for signs of powdery mildew in overly humid conditions.

Seeds per packet: 200

Family: Asteraceae

Scientific name: Symphyotrichum puniceum

Life cycle: Perennial

Hardiness zone: 3

Soil type:
Silty to clayey

Soil moisture level: Wet to soggy

Soil - additional attributes:

Light: Sun, partial shade

Blooming: August to October

Spacing: Home & Garden > Plants > Seeds

Height: 150 cm

Deer resistance: High

Stratification: 30 days

Scarification: No

Germination time: 15 to 30 days

Sowing depth: 3 mm