Overview
Lomatium platycarpum (Torr.) Coult. & Rose, commonly known as Desert Parsley, is a flowering plant that belongs to the Apiaceae family. It is native to North America and is found in the western United States, specifically in California, Nevada, and Arizona.
Description
The Lomatium platycarpum plant is a perennial herb that typically grows to about 2-3 feet tall. It has slender, branching stems and narrow leaves that are up to 1 foot long and divided into small, feathery segments. The plant produces umbels of small, yellowish-white flowers that bloom from April to June. The flowers are followed by flat, oval-shaped seedpods that are up to 1 inch long.
Common Names
Desert Parsley is the most common name for Lomatium platycarpum, but it is also known as Biscuitroot, Fern-leaved Desert Parsley, and Large-fruit Desert Parsley.
Uses
The Native American tribes in the western United States have traditionally used Lomatium platycarpum for its medicinal properties. The plant contains compounds that have antiviral, antibacterial, and anti-inflammatory effects. It has been used to treat respiratory ailments, such as coughs and colds, as well as rheumatism and arthritis. The roots of the plant are also edible and have a sweet, nutty flavor. They were roasted, boiled or eaten fresh by Native American tribes as a source of food.
Light Requirements
Lomatium platycarpum prefers full sun to partial shade conditions. It can adapt to a range of light conditions, but too much shade can lead to stunted growth and reduced flowering.
Temperature Requirements
Lomatium platycarpum is a hardy perennial that can grow in a range of temperatures. It can tolerate freezing temperatures in the winter and hot conditions in the summer. However, it benefits from cool temperatures during the growing season, particularly during the early spring.
Soil Requirements
Lomatium platycarpum requires well-draining soils that are rich in organic matter. It can grow in a range of soil types, including sandy loams, clay loams, and rocky soils. However, it prefers alkaline soils with a pH range of 7.0 to 8.5. Additionally, regular irrigation is necessary during the growing season.
Cultivation
Lomatium platycarpum, commonly known as Biscuit Root, can be cultivated using seeds or root divisions. It grows well in locations with full sunlight or partial shade and prefers well-draining soils.
Watering Needs
It is recommended to water Lomatium platycarpum regularly during the growing season, especially during periods of drought. Ensure that the soil is consistently moist but not waterlogged.
Fertilization
Lomatium platycarpum thrives in soils that are low in nutrients. It is usually unnecessary to fertilize the plant, but compost can be added to the soil to improve soil quality.
Pruning
Lomatium platycarpum typically does not require pruning. However, removal of yellowed or damaged foliage can be done to promote plant health.
Propagation of Lomatium platycarpum (Torr.) Coult. & Rose
Lomatium platycarpum (Torr.) Coult. & Rose, commonly known as California biscuitroot, is a herbaceous plant native to California and Oregon in the United States. Propagation of L. platycarpum is typically accomplished through seed germination, although division of plant root clumps is also possible.
Seed Propagation
Seed propagation of L. platycarpum involves the collection of mature seeds from the plant during the fall season. Seeds can be stored in cool and dry conditions until the spring, when they can be planted in nutrient-rich soil.
The seeds should be sown ΒΌ inch deep into soil and kept moist through the germination period. Germination typically occurs within 2-3 weeks, and the seedlings can be transplanted into individual pots and grown until they reach 6-8 inches in height. The young plants can then be transplanted into their permanent location, ensuring the soil is well-drained and receives plenty of sunlight.
Division of Root Clumps
Propagation of L. platycarpum through division of root clumps involves the careful separation of clumps in the fall or spring seasons. This method is less reliable than seed propagation and should only be used if seed supplies are scarce.
To propagate through division, the plants should be gently dug up and the root ball carefully separated into smaller sections. The smaller sections can be replanted in nutrient-rich soil, ideally in locations with good sunlight and well-drained soil.
Disease and Pest Management for Lomatium platycarpum
Lomatium platycarpum is a hardy native plant that is relatively resistant to pests and diseases. However, like all plants, it may be affected by pests and diseases under certain conditions. Here are some of the most common problems that may afflict Lomatium platycarpum and suggested methods of control:
Diseases
Root Rot
Root rot is a common issue that may affect Lomatium platycarpum, especially in poorly drained soils. It is caused by fungi that thrive in wet conditions and affect the root system of the plant, causing the roots to decay and die. Symptoms of root rot include yellowing of leaves, wilting, and stunted growth. The best way to prevent root rot is by ensuring that the soil is well-drained and aerated. Avoid overwatering or planting in heavy soils prone to waterlogging. If root rot is already present, remove the affected plant parts and apply a fungicide to the remaining roots.
Powdery Mildew
Powdery mildew is a fungal disease that affects many plants, including Lomatium platycarpum. It causes a white, powdery coating on the leaves and stems of the plant. The disease may affect the plant's ability to photosynthesize and weaken the entire plant, leading to wilting and death. The best way to prevent powdery mildew is to ensure proper spacing between plants to promote air circulation and reduce humidity. Remove infected leaves and stems immediately, and apply a fungicide if the disease is severe.
Pests
Aphids
Aphids are small insects that feed on the sap of plants, including Lomatium platycarpum. They may cause wilting, yellowing of leaves, and distortion of plant parts. Prevent aphid infestation by regularly inspecting the plant and controlling the growth of weeds around it, which attract the insects. If aphids are already present, remove them manually or spray the plant with a strong stream of water to dislodge them. Another alternative is applying a pesticide that specifically targets aphids.
Spider Mites
Spider mites are tiny pests that feed on the leaves of plants, usually on the undersides. They cause yellowing of leaves, webbing, and significant damage to the plant if left unchecked. Prevention is key, and it involves maintaining a healthy, well-watered plant that can withstand pest attacks. Use a pesticide to control any spider mites that may be present or remove the affected parts of the plant. As with most pest infestations, early detection and intervention are crucial to ensure the survival of the plant.
With a little bit of care, Lomatium platycarpum can thrive in most growing conditions. By incorporating these pest and disease management strategies into your plant care routine, you can help ensure that your Lomatium platycarpum remains healthy and vigorous for years to come.
