Calendula officinalis (pot marigold, ruddles, common marigold, garden marigold, English marigold, or Scottish marigold) is a plant in the genus Calendula of the family Asteraceae.
Calendula officinalis is widely cultivated and can be grown easily in sunny locations in most kinds of soils. Although perennial, it is commonly treated as an annual, particularly in colder regions where its winter survival is poor, or in hot summer locations where it also does not survive.
Calendula are considered by many gardening experts as among the easiest and most versatile flowers to grow in a garden, especially since they tolerate most soils. In temperate climates, seeds are sown in spring for blooms that last throughout the summer and well into the fall. In areas of little winter freezing, seeds are sown in autumn for winter color, plants will wither in subtropical summer. Seeds will germinate freely in sunny or half-sunny locations, but plants do best if planted in sunny locations with rich, well-drained soil. Pot marigolds typically bloom quickly from seed (in under two months) in bright yellows, golds, and oranges.
Neatness: ≥ 99 %
Percentage of germination: ≥ 80 %
Purity quotient: ≥ 98%
Moisture content: ≤ 8 %
Seed longevity: Two years
1. Seed surface turns the soil thickness is 1 to 2 times the diameter of the seed.
2. Difference area with difference plant season, according to the local climate.
3. Timely and right amount use sufficient base manure and top application.
4. Soil:deep,rich,good irrigate condition,sunny.
5. Growth temperature(°C):15 to 25.
6. Fertilizer:farmyard manure primarily,add phosphate fertilizer and potash fertilizer.
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