Origin
The Lessingia glandulifera Gray var. tomentosa (Greene) Ferris, commonly known as the San Francisco lessingia, is a species of flowering plant that is native to California, more specifically the San Francisco Bay Area. It can be found in the coastal scrub and chaparral habitats of the region.
Common Names
The San Francisco lessingia has several common names, including glandular lessingia, sticky lessingia, and woolly lessingia.
Uses
The San Francisco lessingia has been used by Indigenous peoples for medicinal purposes, such as treating headaches and toothaches. The plant also provides food and habitat for pollinators and other wildlife. In landscaping, it is used in native plant gardens and erosion control projects due to its ability to tolerate drought and poor soil.
General Appearance
The San Francisco lessingia is a perennial shrub that typically grows up to 3 feet tall and 3 feet wide. It has woolly gray-green leaves that are sticky to the touch due to glandular hairs. In late summer and fall, the plant produces bright pink-purple flowers that attract butterflies and bees. The San Francisco lessingia requires full sun and well-draining soil to thrive.
Growth Conditions for Lessingia glandulifera Gray var. tomentosa (Greene) Ferris
Lessingia glandulifera Gray var. tomentosa (Greene) Ferris is a plant species that belongs to the sunflower family (Asteraceae). The plant is native to California and is commonly known as sticky lessingia, glandular lessingia, and tomentose lessingia. Lessingia glandulifera is a small flowering plant that typically grows up to 1.5 feet in height and 2 feet in width. The plant thrives in dry, open areas and is commonly found in grasslands and savannas.
Light Requirements
Lessingia glandulifera requires full sun, which means it needs at least 6 hours of direct sunlight each day. The plant does not tolerate shade, as it will become leggy and have a reduced flower production. Therefore, it is recommended to plant in a location with full sun exposure.
Temperature Requirements
Lessingia glandulifera can tolerate a wide range of temperatures, but it thrives in warmer climates. The plant is adapted to Mediterranean climates, characterized by hot, dry summers and cool, moist winters. In such climates, temperatures range from 30-100°F. The plant can tolerate some frost and occasional snow in winter, but temperatures below 20°F can damage the plant's leaves and stems.
Soil Requirements
Lessingia glandulifera prefers well-draining, sandy or rocky soils that are low in nutrients. The plant can tolerate a wide pH range, but it prefers slightly acidic to neutral soils (pH 6.0-7.5). The plant's root system is shallow, so it is essential to avoid planting the species in heavy or compacted soils. Adequate drainage is essential, as the plant does not tolerate waterlogged soils.
Overall, Lessingia glandulifera is a hardy plant that requires full sun, warm temperatures, and well-draining soils. By providing these growth conditions, gardeners can ensure the plant thrives and produces beautiful flowers during its growing season.
Cultivation
Lessingia glandulifera Gray var. tomentosa (Greene) Ferris, commonly known as tomentose lessingia, is an herbaceous plant that is relatively easy to cultivate and care for. It is a California native and prefers to grow in full sun to partial shade. In the wild, the plant grows in sandy, gravelly, or rocky soils.
When planting, it is advisable to amend the soil with organic matter to improve drainage and nutrient availability. The plant can be propagated through the division of its clumps or through seeds. Division works best in late fall, while seeds should be sown in spring.
Watering Needs
Tomentose lessingia thrives in dry to moderately moist soils. It can withstand periods of drought and does not require frequent watering. Overwatering can lead to root rot, which can kill the plant. Therefore, watering should be done only when necessary, preferably in the morning or evening and not during the day when temperatures are high.
One way to check whether the plant needs watering is to observe the leaves. If they appear wilted, it is a sign that the plant needs watering. On the other hand, if the leaves appear yellow or brown, it could mean that the plant is being overwatered.
Fertilization
Like most native plants, tomentose lessingia does not require fertilizer. The plant is adapted to grow in nutrient-poor soils and can obtain its nutrients from decomposing organic matter and the surrounding ecosystem.
If the plant is growing in an area where the soil is heavily disturbed or nutrient-deficient, application of a slow-release, low-nitrogen fertilizer once a year during the spring can help support healthy growth.
Pruning
Tomentose lessingia generally does not require pruning unless individuals desire to control its size. Pruning can also help encourage bushier growth and prevent the plant from falling over.
Deadheading or removal of spent flower heads typically after flowering can also help improve the plant’s appearance while conserving its energy and resources.
Propagation of Lessingia glandulifera Gray var. tomentosa
Lessingia glandulifera Gray var. tomentosa, commonly known as Tomentose Lessingia, can be propagated through several methods such as seeds, cuttings, and division.
Propagation through Seeds
Propagation through seeds is the most common method used to propagate Lessingia glandulifera Gray var. tomentosa. Collect the seeds during the late summer season and store them in a cool, dry place. Before planting, prepare a potting mix and sow the seeds at a depth of one inch. Keep the soil moist and provide enough sunlight until the seedlings are large enough to transplant.
Propagation through Cuttings
Propagation through cuttings is another method used to propagate the Tomentose Lessingia. Collect the cutting during the growing season, from a healthy, disease-free plant. Using clean and sharp pruning shears, remove a six-inch stem from the parent plant and dip it in a rooting hormone. Plant the stem in a potting mix and keep the soil moist. Provide sufficient light and gradually increase the exposure to sunlight as the plant matures.
Propagation through Division
The division is another propagation method commonly used to propagate the Tomentose Lessingia. This method is best done when the plant is mature and healthy. Start by digging up the plant and carefully separate the root ball into several sections. Ensure that each section has enough roots and foliage. Replant the divided sections in suitable potting mix and keep the soil moist. Provide sufficient light and gradually increase the exposure to sunlight as the plants mature.
Disease Management
Lessingia glandulifera Gray var. tomentosa is a plant that can be susceptible to various diseases such as powdery mildew, rust, and leaf spot.
Powdery Mildew: This disease can cause white or gray powdery patches on the leaves, stems, and flowers of the plant. It can weaken the plant and reduce its ability to photosynthesize. To manage this, regular pruning, maintaining proper watering, and providing adequate air circulation around the plant can help prevent the growth of the fungus. In case of infection, a fungicidal spray can be used as a last resort.
Rust: Rust appears as orange or rusty brown spots on the surface of the leaves. It can cause severe damage to the plant if left unchecked. To manage this, remove any infected or fallen leaves immediately to prevent the spread of the disease. Fungicidal spray may also be used as a control measure.
Leaf Spot: Leaf spot appears as dark brown to black circular spots on the foliage. This disease can cause the leaves to fall prematurely and reduce the plant's ability to photosynthesize. To manage this, pick up and remove any fallen leaves around the plant. Routine fungicidal sprays can also be used for effective protection measures.
Pest Management
Lessingia glandulifera Gray var. tomentosa can also be affected by pest infestations such as aphids and spider mites. These pests can cause damage to the plant by sucking the sap from the leaves and stems.
Aphids: These pests are small and typically found on the underside of leaves. They can cause yellowing and wilting of the leaves. To manage this, natural predators such as ladybugs can be introduced to the plant. Regular spraying with soapy water or a solution of neem oil and water can also help to control the population of aphids.
Spider Mites: These pests are tiny and can be difficult to detect until damage is visible. They cause discoloration of the leaves, wilting, and leaf drop. To manage this, regular pruning, maintaining proper watering, and providing adequate air circulation can help control the spread of spider mites. Insecticidal sprays can also be used to manage the infestation.
It is important to note that prevention is the best solution when it comes to managing diseases and pests. Proper sanitation and care, including regular pruning, watering, and fertilization, can help keep the plant healthy and resilient against diseases and pests. Monitoring the plant regularly for any signs of disease or pest infestation can help keep it healthy and productive.
