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Bidens (Swamp Marigold) & Cosmos

Swamp Marigold from North America are mostly winter hardy, tall growing perennials with numerous large, bright sulfur yellow flowers in mid summer. They are native of humus rich, semi-moist soils in prairies, open spots in woods and along side rivers. Cosmos species are native of Mexico to South America. These are non winterhardy and prefer rather dryish soils and are grown as annuals. All are easily grown in any rich, well-drained soil in a sunny to partially shaded spot, Mexican species in full sun.
Sow seeds from winter hardy species flat in any rich, well drained soil. Keep pots in a sunny, protected spot outside. Most species require a cooling period of several months prior to germination. If these species are sowed late in the year, they do not germinate before spring in the following year. Transplant to the final spot in the garden from mid summer to early autumn. Annual Mexican members should be sowed directly to the ground after the last freezing nights by the end of spring.
All are USDA Climate Zone 6.
20 seeds per package.
Articles
Bidens aristosa (Swamp Marigold)

Bidens aristosa (Swamp Marigold)

120cm, Swamp Marigold is a fast growing annual species with serrated leaves and numerous rich yellow flowers in summer. For any humus rich, slightly moist soil in a sunny to partially shaded spot. V-VII.
20 seeds per package.

price (plus Shipping Costs)
seed package 7419 € 2,99*
* This price is valid if a single item is ordered only. The shop will automatically assign discounts on bulk purchases. If several packages are ordered from this species, they will be merged into a single package. Please refer to our General Terms of Business.
Bidens aristosa var. mutica (Bur Marigold)

Bidens aristosa var. mutica (Bur Marigold)

40 (90)cm, Bur Marigold or Tick Seed is a herbaceous perennial with deeply divided toothed leaves and terminal lose clusters of bright yellow flowers in late summer and autumn. It is native of semi-moist meadows and borders of woods and thickets throughout the midwestern states of the USA. Easily grown in a rich, well drained soil in a sunny spot. VIII-X.
20 seeds per package.

price (plus Shipping Costs)
seed package 0003 € 4,99
Bidens cernua (Nodding Bur Marigold)

Bidens cernua (Nodding Bur Marigold)

150 (220)cm, Nodding Bur Marigold is a fast growing annual species with winged stems, serrated leaves and numerous small rich yellow flowers in summer. For any rich, well drained soil in a sunny spot. V-VII.
20 seeds per package.

price (plus Shipping Costs)
seed package 7420 € 2,99*
* This price is valid if a single item is ordered only. The shop will automatically assign discounts on bulk purchases. If several packages are ordered from this species, they will be merged into a single package. Please refer to our General Terms of Business.
Bidens coronata (Tall Swamp Marigold)

Bidens coronata (Tall Swamp Marigold)

50 (100)cm, Tall Swamp Marigold is a herbaceous perennial with deeply divided dark green leaves and terminal lose clusters of bright yellow flowers in late summer and autumn. It is native of semi-moist woods and meadows and at the border of swamps throughout the central and eastern states of the USA. Easily grown in a rich, well drained soil in a sunny spot. VIII-X.
20 seeds per package.

price (plus Shipping Costs)
seed package 0004 € 4,99*
* This price is valid if a single item is ordered only. The shop will automatically assign discounts on bulk purchases. If several packages are ordered from this species, they will be merged into a single package. Please refer to our General Terms of Business.
Bidens ferulifolia (Apache Beggarticks)

Bidens ferulifolia (Apache Beggarticks)

30cm, Apache Beggarticks is a most floriferous, low growing biannual to perennial, which is usually cultivated as an annual, as it is not reliably winter hardy. It is native from the USA (Arizona) to Mexico (Sonora semidesert) und makes above finely cut grayish-green leaves numerous small bright yellow flowers throughout summer. For any rich, well drained soil in a sunny spot. Preculture under glass at a minimum of some 20°C from early spring onwards, transplant seedlings to the garden after the last freezing nights by the end of spring. VI-IX.
20 seeds per package.

price (plus Shipping Costs)
seed package 4559 € 4,99
Cosmos bipinnatus (Gloria Cosmos)

Cosmos bipinnatus (Gloria Cosmos)

110 (140)cm, Gloria Cosmos (syn. Bidens bipinnatus) is a beautiful Central American annual with bright rose (rarely pure white) flowers above finely dissected leaves on tall, branching stems. Sow directly to the ground after the last freezing night in spring. Easily cultivated in any rich, well drained soil in full sun. VII-IX.
20 seeds per package.

price (plus Shipping Costs)
seed package6977 € 1,99*
* This price is valid if a single item is ordered only. The shop will automatically assign discounts on bulk purchases. If several packages are ordered from this species, they will be merged into a single package. Please refer to our General Terms of Business.
Cosmos sulphurea (Flor de Chuvisco)

Cosmos sulphurea (Flor de Chuvisco)

100 (150)cm and 200 (300)cm, Flor de Chuvisco or Orange Cosmos (syn. Bidens sulphurea) is a beautiful Mexican annual with bright orange to rich yellow flowers above dissected leaves on tall, branching stems. Sow directly to the ground after the last freezing night in spring. Easily cultivated in any rich, well drained soil in full sun. VI-IX.
20 seeds per package.

price (plus Shipping Costs)
seed package8467 € 1,99