Origin and Common Names
Bidens lineariloba Oliv. var. deminuta Sherff, commonly known as the dwarf needleleaf beggarticks, is a species of flowering plant in the family Asteraceae. It is native to the southwestern United States, particularly in Arizona and New Mexico, and northern Mexico.
General Appearance
The dwarf needleleaf beggarticks has a striking appearance with its erect stems that can grow up to 50 cm tall. The leaves of the plant are long and narrow, measuring about 2-5 cm in length with serrations along the edges. The tips of the leaves taper to a point and are arranged opposite each other along the stem. The flowers of the plant are bright yellow and measure about 1.5cm in diameter. The plant typically blooms from July through October.
Uses
The plant has been used by Native American tribes for medicinal purposes to treat various ailments including kidney problems, arthritis, and fever. The seeds of the plant are also a food source for birds and other wildlife. Additionally, it is commonly used in landscaping and is a popular choice for rock gardens and xeriscapes due to its striking appearance and low-maintenance nature.
Light Requirements
The Bidens lineariloba Oliv. var. deminuta Sherff typically does well in partial to full sunlight conditions. The plant will require an adequate amount of sunlight to complete the process of photosynthesis and must be protected from excessive direct sunlight which can result in sunscald.
Temperature Requirements
The plant thrives in climates with warm temperatures ranging between 60 and 85°F. The temperatures should not fall below 45°F or rise beyond 95°F. Nighttime temperatures should also be consistent with daytime temperatures for optimal growth and development. Frost can cause the plant to die or have weak growth.
Soil Requirements
The Bidens lineariloba Oliv. var. deminuta Sherff requires soil with good drainage to prevent root rot. The ideal soil pH levels for this plant ranges between 5.0 and 6.5. The soil texture should be rich in organic matter to provide the plant with the required nutrients for healthy growth. The addition of compost or manure can enhance the soil structure and improve nutrient availability for the plant.
Cultivation Methods
Bidens lineariloba Oliv. var. deminuta Sherff can be grown in both pots and garden beds. It prefers full sunlight and well-drained soil. The soil should be loose and rich in organic matter. Sow the seeds in spring or early summer, and keep them moist until the seedlings emerge.
Watering Needs
The plant needs regular watering to keep the soil moist, but be careful not to overwater as it is susceptible to root rot. Watering twice a week is sufficient, and adjust the frequency depending on the weather. If the soil is dry to the touch, it is time to water.
Fertilization
Bidens lineariloba Oliv. var. deminuta Sherff benefits from regular fertilization to promote healthy growth and abundant blooms. Use a balanced fertilizer every two to three weeks during the growing season. If the plant is grown in a container, apply half the recommended dose.
Pruning
The plant does not require extensive pruning, but deadheading spent blooms will encourage the growth of new flowers. Use clean, sharp scissors or pruning shears to cut the stem just above the nearest leaf node. If the plant becomes too tall and leggy, cut back the stems by one-third after the blooming season is over.
Propagation of Bidens Lineariloba Oliv. var. Deminuta Sherff
Bidens lineariloba Oliv. var. deminuta Sherff is a plant that is traditionally propagated by seeds. However, it can also be propagated by division or stem cuttings. Here are the details on each method:
Propagation by Seeds
Propagation by seeds is the most common method used for Bidens lineariloba Oliv. var. deminuta Sherff. The seeds are quite small and should be sown directly into the soil with just a light covering of soil. They should be kept moist and warm until they germinate, which usually takes about 2-3 weeks. Once the young plants have a few sets of true leaves, they can be transplanted to their permanent location.
Propagation by Division
Bidens lineariloba Oliv. var. deminuta Sherff can be divided through its root system. It is best to do this in the spring before the growth period begins. First, dig up the plant and separate the roots gently by hand or with a garden fork. Make sure that each division has some roots attached. Then, plant each division in a suitable location, keeping the soil moist until they are established.
Propagation by Stem Cuttings
Bidens lineariloba Oliv. var. deminuta Sherff can also be propagated by stem cuttings. Choose a healthy stem and make a cutting that is 4-6 inches long. Remove the bottom leaves, then dip the cut end in rooting hormone. Plant the cutting in a pot filled with moist soil and keep it in a warm, bright location. Once the plant has roots, it can be transplanted to its permanent location.
Disease and Pest Management for Bidens lineariloba Oliv. var. deminuta Sherff
Bidens lineariloba Oliv. var. deminuta Sherff, commonly known as Spanish needles, is a species of flowering plant in the Asteraceae family. While it is known for its beauty and resilience, it is also vulnerable to a range of pests and diseases that can cause damage or death to the plant.
Common Diseases
Bidens lineariloba Oliv. var. deminuta Sherff is susceptible to several types of fungal diseases, including powdery mildew and stem rot. Powdery mildew is a fungal disease that appears as a white, powdery substance on the leaves and can cause the foliage to yellow and wilt. Stem rot, on the other hand, is a fungal disease that causes the stems of the plant to rot, leading to the death of the plant. To manage these fungal diseases, it is essential to remove and destroy any infected plant material, to avoid the spread of the disease. Additionally, providing good air circulation and avoiding overhead watering can help to prevent these diseases from occurring. In some cases, fungicides may be necessary to control severe outbreaks.
Common Pests
Bidens lineariloba Oliv. var. deminuta Sherff is also susceptible to various pests, including aphids, spider mites, and thrips. Aphids are small insects that suck sap from the plant, causing the leaves to curl and becoming yellowed. Spider mites are tiny pests that suck the sap from the plant, leaving small, yellow or white spots on the leaves, while thrips are small insects that damage the leaves and flowers of the plant. To manage these pests, regular inspection of the plant is essential to identify and control outbreaks. Natural predators of these pests, like ladybugs and lacewings, can be introduced into the garden. Additionally, insecticidal soaps or neem oil can be applied to control severe outbreaks of these pests.
By staying vigilant and using the appropriate management practices, it is possible to keep Bidens lineariloba Oliv. var. deminuta Sherff healthy and growing strong.
