Goldmarie, two teeth, gold cosmos plant

The Goldmarie Bidens ferulifolia is a herbaceous plant with brightly colored yellow inflorescences and fine, elongated and heavily slit leaves. Due to the dense deciduous foliage, it is often used as a decorative ornamental plant. The Goldmarie is colloquially referred to as gold cosmos or gold fever. The botanical name of Bidens (Zweizahn) goes back to the fruits of the plant. They attach themselves to animal fur and clothing with their barbs, thereby gaining access to new habitats. Bidens ferulifolia is a grateful summer flower that requires minimal maintenance.

soil/location

So that Bidens ferulifolia grows well, it needs a well-drained soil. It should have enough nutrients. A soil improvement with sand or gravel and humus and a pH value between 5 and 6 have a positive effect on the growth of the Goldkosmos plant, because the Bidens originally comes from Mexico, where they grow in the wild between field plants grows. The Goldmarie forms the most flowers in a warm, sunny location. However, it also tolerates partial shade and shade, although a shady location can have an adverse effect on the abundance of flowers and produce more green foliage that forms a dense carpet. The Goldmarie with overhanging growth is often used for balcony boxes, hanging baskets, borders and roadsides. It does well in rock gardens and planters. The Goldkosmos plant is suitable for planting under tall stems and has recently been offered as a tall stem itself.

Plant

The Goldmarie grows between 30 and 60 cm high and develops new flowers between early summer and autumn, which attract many insects, bees and bumblebees with their slightly sweet scent. The planting distance should be around 30 cm in the bed and along the wayside so that the Bidens can develop well. About nine plants can be placed on one square meter. The planting depth for the young seedlings is 10 to 12 cm. A shady day is an advantage for planting out, so that the Goldmarie can settle in well. A partially shaded spot is appropriate until the seedlings have established themselves.

Pour

The soil should never dry out completely, although waterlogging is not tolerated. In midsummer, the busy perennial bloomer can be watered in the morning and evening.

Fertilize

The nutrient requirement is high because the Goldmarie keeps growing new shoots with flowers and leaves. However, the first fertilizer should only be applied when the perennial has grown properly. In the main season, in June, July, August and September, a weekly fertilizer application with commercially available liquid fertilizer is advantageous. With less fertilizer, the two-tooth does not grow as luxuriantly. However, even in rainy summers, it reliably forms many small yellow flowers that look like small suns.

Cut

Bidens ferulifolia does not usually need to be cut if rapid and voluminous growth is desired. Withered flowers do not need to be cut off. It is simply overgrown by new shoots and later falls off on its own. Bidens doesn't seed itself. If the faded flowers are removed, new flowers will quickly form. If the Bidens ferulifolia spreads too much, it can of course also be severely cut back if necessary.

hibernate

Overwintering is not worthwhile if new cuttings were obtained from the mother plant in autumn. However, if Bidens ferulifolia grows in planters, a light, frost-free winter location between 5 °C and 10 °C is necessary. The two-tooth is only poured sporadically in the winter quarters. The root ball should not dry out completely. Because of the strong rooting, it needs new plant substrate and a larger plant container in spring. Commercially available potting soil is perfectly adequate. By the way: At the end of the winter period, the Goldmarie can be watered more.

Propagating by seeds

Bidens ferulifolia can be propagated by seeds or cuttings. This is more common than hibernation. For sowing, the seeds are collected from the withered flowers in autumn and sown under glass in January to February for early flowering. Sowing the seeds is still possible in March. The seeds are spread over the potting soil and lightly covered with soil. The germination period is around two weeks. During this time, the soil must be kept slightly moist at room temperature.

Propagation by cuttings

• Cut cuttings in early fall
• plant in growing substrate
• keep slightly moist
• until the roots have formed do not place in the blazing sun
• Overwinter young plants in a bright and frost-free place and plant outdoors in spring after the ice saints

Possible diseases and pests

• aphids
• red spider
• thrips

They are controlled with commercially available insecticides.

Decorative species

• Bidens gardeneri with orange flowers
• Bidens ferulifolia Goldilocks Rocks with bright yellow flowers
• Bidens pilosus with white flowers and a yellow center
• Bidens Orange Drop with a yellow flower center and orange-yellow petals with a yellow tip
• Biden's Red Drop with scarlet flowers
• Bidens Belamy White with white flowers and dark green leaves

frequently asked Questions

Worth knowing about Goldmarie shortly

• The Goldmarie loves the blazing sun, but can also cope with some shade.
• The demands on the earth are low. normal garden soil is completely sufficient.
• The plants have a very high nutrient requirement. They need to be watered and fertilized regularly.
• Fertilizing twice a week allows the Goldmarie to grow and bloom luxuriantly.
• The plant should never dry out completely, but waterlogging is just as damaging.

wintering

With a bit of skill, the Goldmarie can be overwintered. Before that, the crown should be cut back to about a third of the existing leaf mass. The ideal place to hibernate is light and cool, at 5 to 10 °C. Dark rooms are not suitable. In the spring the plant is cut back again.

After a year or two, the plant is repotted in the spring. The jar should be slightly larger, but not much. It is favorable if the new soil contains around 30 percent mineral components such as clay, loam, sand, tuff, volcanic components or expanded clay contains.

multiply

The Goldmarie is multiplied by sowing between January and March. The soil should be kept evenly moist and not allowed to dry out. The germination period is 12 to 18 days. 20°C is the ideal temperature. The seedlings can be transplanted after the ice saints. Propagation via cuttings can also be attempted. Both head and partial cuttings are suitable. If possible, plant two cuttings together to get a nice bushy plant.

• If you cut the tops every two weeks in April and May, the plant will become a mass bloomer.
• As pests can white bow tie, miner fly and thrips appear.

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