**Other Common Names:** Bei Xigong, Ganba Flower, Immortelle, Helichrysum Chrysanthemum
**Genus:** Asteraceae, *Helianthus annuus*
**Origin:** Australia
**Plant Description:** Marsh Chrysanthemum is an annual herb that typically grows to a height of 60–90 cm. It produces achenes (small dry fruits) within its flower heads, which mature from August to November.
**Seed Harvesting:** The main part harvested is the chrysanthemum flower head. The best time for harvesting is between October and November, when most of the apical inflorescences have fully matured. After cutting, the flowers are dried and stored in a cool, dry place. They are then concentrated to remove impurities, and only high-quality seeds are selected for further use.
**Seed Grading:** Before packaging, the collected seeds must be carefully graded to ensure species purity, proper moisture content, and absence of contaminants. The germination standards are as follows:
- First-grade seeds: ≥95% germination rate
- Second-grade seeds: ≥90% germination rate
- Third-grade seeds: ≥85% germination rate
It’s acceptable for seeds to have up to 5% below the standard, depending on the grade. However, as storage time increases, the germination rate may decrease slightly, so the grading criteria should be adjusted accordingly.
**Packaging:** The seeds of Chrysanthemum are of medium size. For internal packaging, moisture-proof paper bags are used, while printed paper bags serve as external packaging. Care must be taken to avoid mixing different grades during the process.
- Wholesale packaging: 500–1000 grams per bag
- Retail packaging: 1–2 grams per bag
**Storage Management:** To maintain seed quality, they should be stored in a dry, dark, well-ventilated area with an ambient temperature of 2–4°C.
**Storage Duration:** When properly stored using the above methods, Chrysanthemum seeds can remain viable for 1–2 years, maintaining a good germination rate.
**Gardening Applications:** This plant is drought-tolerant and easy to care for, making it ideal for ornamental gardening. It is commonly used in floral arrangements or for producing dried flowers, adding long-lasting beauty to any garden or decor.
**Supply Suggestions:** Breeding Chrysanthemum via seed is typically done from March to May each year. Seeds should be ordered in advance to ensure availability. To maintain quality, unsold seeds should be stored during off-season periods. If seeds have been stored for over one year, clear instructions should be provided before delivery to ensure customer satisfaction.
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