Overview: Ammopursus ohlingerae (Blake) Small
Ammopursus ohlingerae (Blake) Small is a plant species that belongs to the family Asteraceae. It is commonly known as dustymaiden and is a rare species native to Florida in the United States.
Appearance
Ammopursus ohlingerae is a small perennial herb that grows up to 20 cm tall. The plant has slender stems and small leaves that are covered in fine white hairs that give it a dusty appearance. The flowers of the plant are white or pink in color and grow on top of the stems in small clusters. The plant blooms from February to March.
Uses
Although not commonly used for medicinal purposes, Ammopursus ohlingerae is an important plant species in the native Florida ecosystem. The plant thrives in sandy soils and plays a significant role in stabilizing sand dunes and preventing erosion along the coastline. It also helps to anchor sand dune vegetation by providing shade and protection for other plant species.
The plant is also considered an ornamental species in landscaping and is often used in xeriscaping, an environmentally friendly landscaping technique that involves using drought-resistant plants to conserve water.
Conservation Status
Ammopursus ohlingerae is classified as a vulnerable species due to its limited range and declining population. The plant is threatened by habitat loss, development, and human activity, including recreational use of beaches. Conservation efforts are currently underway to protect and preserve this important species.
Growth Conditions for Ammopursus ohlingerae
Ammopursus ohlingerae, commonly known as Ohlinger’s sandmat, is a small annual plant that is native to the southwestern United States and northern Mexico.
Light Requirements
This plant prefers full sun or partial shade for optimal growth. It is adapted to grow in sandy and arid environments, which tend to have high levels of light exposure.
Temperature Requirements
Ammopursus ohlingerae is highly resistant to drought and can withstand high temperatures. It thrives in temperatures ranging from 20 to 35 degrees Celsius. In colder environments, it is best grown in a greenhouse or under protection.
Soil Requirements
Ammopursus ohlingerae prefers well-draining soils with a sandy or gravelly texture. This plant can grow in nutrient-poor soils and is tolerant of saline conditions.
The pH of the soil should be between 6.0 and 8.5, which is considered a slightly alkaline to neutral environment. The plant is tolerant of slightly acidic conditions, but will not grow well in highly acidic soils.
To enhance soil drainage, growers may add organic matter such as sand or gravel to improve the soil texture.
Overall, Ammopursus ohlingerae is a hardy plant that thrives in arid environments. It is an excellent choice for gardeners looking to add a unique, drought-resistant plant to their collections.
Cultivation Methods
Ammopursus ohlingerae grows best in well-drained sandy soils and full sun exposure. The plant can tolerate poor soils and drought conditions but grows better in fertile soils. It is best to plant the seedlings in the late fall or early winter for optimal establishment. Once established, the plant is low maintenance and easy to grow.
Watering Needs
The plant is drought-resistant and does not require frequent watering. However, it is essential to provide sufficient water during the establishment period. After the establishment period, water the plant only when the soil is dry. Avoid overwatering, which can lead to root rot and other water-related diseases.
Fertilization
Ammopursus ohlingerae does not require regular fertilization. However, applying a slow-release fertilizer during the establishment period can help promote root growth and establishment. It is best to use a low nitrogen and high phosphorus fertilizer to encourage flowering and seed production. Avoid over-fertilization, which can lead to excessive vegetative growth at the expense of flowering and seed production.
Pruning
Ammopursus ohlingerae does not require regular pruning, but it is beneficial to remove dead or damaged parts of the plant to promote healthy growth. After flowering, cut back the plant's stem to encourage seed production and prevent self-seeding. Avoid cutting back the stem before flowering as this may hinder the plant's ability to produce seeds.
Propagation of Ammopursus ohlingerae (Blake) Small
Ammopursus ohlingerae (Blake) Small is commonly known as Seaside centipede plant. The plant is native to the southeastern United States and can grow up to 2-4 feet tall and 1-3 feet wide. The plant produces showy, yellow flower heads that bloom in late summer to early fall.
Propagation by Seeds
Ammopursus ohlingerae (Blake) Small can be propagated by seeds. The best time to collect seeds is in the fall when the flower heads have dried up and turned brown. The seeds should be harvested and stored in a cool, dry place until the next growing season.
To propagate the plant from seeds, plant them in a well-draining soil mixture and cover them lightly with soil. Keep the soil moist and warm and within a few weeks, the seedlings will start to emerge.
Propagation by Cuttings
Ammopursus ohlingerae (Blake) Small can also be propagated by stem cuttings. The best time to take cuttings is in the spring or early summer when the plant is actively growing. Choose a healthy stem and take a cutting that is 4-6 inches long.
Trim off the lower leaves to expose the node and dip the cut end in a rooting hormone. Plant the cutting in a well-draining soil mixture and keep the soil moist and warm. Within 4-6 weeks, the cutting should start to root and grow into a new plant.
Propagation by Division
Ammopursus ohlingerae (Blake) Small can also be propagated by division. This method is best done in the fall or early spring when the plant is dormant. Dig up the plant and gently separate the root ball into smaller sections, making sure each section has some roots and tops.
Replant the smaller sections in a well-draining soil mixture and keep the soil moist until the new plants become established.
Overall, Ammopursus ohlingerae (Blake) Small is an easy plant to propagate. Whether it is by seeds, cuttings, or division, the plant can quickly grow into a beautiful addition to any garden or landscape.
Disease Management
Ammopursus ohlingerae, also known as Ohlinger's sandbur, does not face many diseases. However, it can be prone to fungal infections such as leaf spot, powdery mildew, and root rot. To prevent such diseases, avoid overwatering the plant and provide adequate drainage. Ensure the soil is well-draining and provide proper ventilation to the plant by placing it in a well-ventilated area. Regularly maintain plant hygiene by pruning and removing infected plant parts. Fungal infections can be treated with fungicides, but it's always better to take preventive measures.
Pest Management
The most common pests that attack Ammopursus ohlingerae are mealybugs, spider mites, and scales. These pests infiltrate the plant's stems and leaves and suck the sap, which weakens the plant and leads to stunted growth and yellowing of leaves. Control such pests by wiping the plant's leaves and stems with a damp cloth or spraying water to physically remove them. In severe infestations, use insecticides specifically targeting the pest species. Avoid using broad-spectrum insecticides as they may harm beneficial insects and pollinators. Additionally, maintain proper plant hygiene and avoid overcrowding plants to reduce pest infestations.
