Introduction:
Bidens onisciformis Sherff, commonly known as the beady harvestman, is a plant species that belongs to the family Asteraceae. This plant is native to South America and can be found in Brazil, Argentina, Uruguay, and Paraguay.
Appearance:
The beady harvestman is a herbaceous plant that typically grows up to 1 meter in height. It has dark green leaves that are serrated with a lance-shaped outline. The stem of this plant is green, hairy, and slightly woody at the base. The flowers of this plant are bright yellow and about 2 centimeters in diameter. They bloom on the tips of the branches and have a daisy-like appearance.
Common Names:
The beady harvestman has several common names in different regions. In Brazil, it is known as "Anileiro" or "Picão-preto." In Argentina, it is called "Amancay" or "Coculí." In Uruguay, it is known as "Traicao" or "Poronguero." In Paraguay, it is called "Mamo Kua" or "Yacupitá."
Uses:
Bidens onisciformis Sherff has several medicinal uses. In South America, a decoction of the leaves of this plant is used as an anti-inflammatory, analgesic, and antispasmodic. It is also used to treat respiratory diseases, menstrual disorders, and stomach problems. The leaves of this plant are also used as a poultice for skin irritations, insect bites, and wounds.
In addition to its medicinal uses, Bidens onisciformis Sherff is also used in traditional medicine for spiritual purposes. According to folklore, burning the leaves of this plant will ward off evil spirits and bring good luck.
Light Requirements
The Bidens onisciformis Sherff plant thrives in a location with full sun exposure. This plant requires a minimum of six hours of direct sunlight each day. When grown indoors, they should be placed near a south-facing window or one that receives maximum light to ensure adequate light exposure.
Temperature Requirements
The Bidens onisciformis Sherff plant grows optimally in warm temperatures. It can withstand high temperatures of up to 90 degrees Fahrenheit, but temperatures as low as 50 degrees Fahrenheit can cause damage. This plant can grow in USDA hardiness zones 9-11 and is ideal in areas with a warm climate.
Soil Requirements
Bidens onisciformis Sherff plants prefer well-draining soils with high fertility. The soil should be slightly acidic to neutral with a pH range between 5.5 and 7.5. The soil should be kept consistently moist but not waterlogged, as this can lead to root rot. The addition of organic matter can help improve soil fertility and drainage.
Cultivation
Bidens onisciformis Sherff, commonly known as the bur marigold, is a plant species that is easy to cultivate. It is a hardy perennial that prefers slightly moist soil and full sunlight, although it can tolerate partial shade.
It is best to sow the seeds of Bidens onisciformis in the spring or early summer. The seedlings will usually emerge within two weeks and can be transplanted once they have grown big enough to handle.
Watering Needs
Water regularly during the growing season, making sure that the soil is not allowed to dry out completely. Overwatering, however, can lead to root rot, so it is essential to ensure that the soil is well-draining.
During the winter months, Bidens onisciformis is drought-tolerant and can survive with little to no water.
Fertilization
Bidens onisciformis does not require excessive feeding, but it does benefit from an annual application of a slow-release balanced fertilizer in the spring.
Avoid using high-nitrogen fertilizers as they can encourage excessive foliage growth at the expense of flowering.
Pruning
Pruning is not necessary for Bidens onisciformis, but if you wish to extend the flowering period, it is advisable to deadhead the spent blooms regularly. This will encourage the plant to produce more flowers throughout the growing season.
If the plant becomes too large and overgrown, it can be cut back to the ground in the autumn. This will encourage new growth in the spring.
Propagation of Bidens onisciformis Sherff
Bidens onisciformis Sherff, also known as tickseed sunflower, is a herbaceous perennial plant that belongs to the Asteraceae family. It is native to North America and is a popular ornamental plant. Propagation of Bidens onisciformis Sherff can be achieved through several methods.
Propagation by Seed
The easiest way to propagate Bidens onisciformis Sherff is by seed. Seeds are readily available from many nurseries and seed suppliers. To germinate, the seeds should be sown in a seed tray filled with moist, well-draining soil.
The tray should be placed in a warm, bright location with temperatures of around 70-75°F. The seeds should germinate within a week or two. Once the seedlings are large and strong enough, they can be transplanted into individual pots or directly into the garden.
Propagation by Division
Another method to propagate Bidens onisciformis Sherff is by dividing existing plants. This should be done in early spring or autumn when the plant is dormant. To divide the plant, carefully dig up the entire root system and gently separate it into sections with a sharp knife or spade.
Each section should have at least one healthy shoot and a good root system. Replant the divided sections in well-draining soil at the same depth they were at before. Water well and keep the soil moist until new growth appears.
Propagation by Cuttings
Bidens onisciformis Sherff can also be propagated by taking stem cuttings in summer. Select healthy stems without flowers and cut them to a length of around 4-6 inches.
Remove the lower leaves and dip the cut end in rooting hormone powder. Plant the cutting in a pot filled with a well-draining soil mixture and water well. Cover the pot with a plastic bag to keep the cutting moist and place it in a warm, bright location.
Roots should start to appear within a few weeks, and the new plant can be transplanted into the garden or to a larger pot once it has developed a good root system.
Disease and Pest Management for Bidens onisciformis Sherff
Bidens onisciformis Sherff, or commonly known as butterfly needles, is a beautiful annual plant that produces yellow flowers that attract butterflies and other pollinators. However, this plant is susceptible to various diseases and pests that can affect its growth and overall health. Here are some of the common diseases and pests that might affect Bidens onisciformis Sherff:
Diseases
Powdery Mildew: Powdery mildew is a fungal disease that affects the leaves, stems, and flowers of Bidens onisciformis Sherff. It appears as a white, powdery substance on the surface of the plant, causing the leaves to appear curled and distorted. To manage this disease, avoid overhead watering and keep the plant well-ventilated. Use fungicides that contain sulfur or neem oil to control the spread of powdery mildew.
Leaf Spot: Leaf spot is a fungal disease that affects the leaves of Bidens onisciformis Sherff. It appears as circular, brown spots that may have a yellow halo around them. This disease can cause the leaves to wilt and drop prematurely. To manage leaf spot, remove infected leaves and avoid overhead watering. Use a fungicide that contains copper to control the spread of leaf spot.
Pests
Aphids: Aphids are small, soft-bodied insects that suck the sap from the leaves of Bidens onisciformis Sherff. They can cause the leaves to become distorted and may transmit viral diseases. To manage aphids, spray the plant with a strong stream of water to dislodge them. Release beneficial insects such as ladybugs or lacewings to control their population.
Spider Mites: Spider mites are tiny insects that can cause yellowing and bronzing of the leaves of Bidens onisciformis Sherff. They spin webs on the undersides of leaves and can reproduce quickly, causing significant damage to the plant. To manage spider mites, keep the plant well-watered and avoid dusty conditions. Use insecticidal soap or neem oil to control their population.
By being vigilant and taking appropriate measures in managing the diseases and pests, Bidens onisciformis Sherff can thrive and provide a stunning display of flowers.
