Overview: Eriogonum Ochrocephalum S. Wats. var. Alexandrae Reveal
Eriogonum ochrocephalum S. Wats. var. alexandrae Reveal is a flowering plant that belongs to the Polygonaceae family. It is a subspecies of the more commonly known plant Eriogonum ochrocephalum S. Wats. The plant is endemic to the United States, and can be found primarily in the states of Nevada and California. The plant is generally found in elevations ranging from 5000 to 7500 feet, and typically grows in arid and rocky environments.
Common Names
Eriogonum ochrocephalum S. Wats. var. alexandrae Reveal is commonly known by several common names, including Davidson's Buckwheat, Davidson's eriogonum, and Davidson's wildbuckwheat. The common names have been derived from the plant's discoverer, Dr. Davidson, who first identified the plant species in the 19th century.
Appearance
Eriogonum ochrocephalum S. Wats. var. alexandrae Reveal is a small perennial plant that grows between 1 to 2 feet tall. The plant has multiple branches that are covered in woolly, silvery hairs, giving the plant a whitish-grey appearance. The leaves of the plant are small and oval-shaped, and also covered in hairs. The flowers of the plant are small and white, with pink or red coloration when in bud. The flowers bloom during the months of May to September, and are held in clusters at the top of the branches.
Uses
Eriogonum ochrocephalum S. Wats. var. alexandrae Reveal is not commercially cultivated, but it is often used in native plant gardens and landscaping, due to its unique appearance and drought tolerance. The plant is also used for restoration projects in areas affected by wildfires. Additionally, the plant has been traditionally used by Native American tribes for medicinal and ceremonial purposes, such as treating headaches and fevers.
Growth Conditions for Eriogonum ochrocephalum var. alexandrae
Eriogonum ochrocephalum var. alexandrae, also known as Alexandra's Buckwheat, is a native California plant species. When growing this plant, it is important to provide specific growth conditions to encourage its growth and survival.
Light
Alexandra's Buckwheat needs full sunlight and warmth to thrive. This plant species grows in open areas, such as meadows, bluffs, and ridges. It is suited for areas that receive at least 6 hours of direct sunlight per day. Too much shade can cause the plant to grow weak, spindly stems and few flowers.
Temperature
Eriogonum ochrocephalum var. alexandrae grows well in areas that offer mild or hot temperatures. The plant thrives in USDA Hardiness Zones 8 to 10. The minimum temperature threshold for this plant is 25°F, but it can withstand temperatures up to 115°F.
Soil
The soil requirements for Alexandra's Buckwheat are specific. It needs well-draining soil that is mildly acidic. Rocky or sandy soils with a low pH level (5.5-7.0) are suitable for growing this plant species. The plant does not tolerate wet or waterlogged soils, so it is important to avoid firming the soil by heavy watering.
When planting, make sure you elevate the soil to improve drainage. The plant serves as a pollinator magnet with thick spiky white flowers that appear in late spring and early summer. In situations of low rainfall, a monthly watering of 15 gallons per square yard of mulch around the base will help the plant look healthy rather than faded.
By following these three key growth requirements, you can successfully grow and maintain Eriogonum ochrocephalum var. alexandrae, also known as Alexandra's Buckwheat, in your garden or open space.
Cultivation Methods
Eriogonum ochrocephalum S. Wats. var. alexandrae Reveal needs to be grown in full sunlight for the majority of the day, preferably in a spot with good drainage. It can withstand harsh temperatures and rocky soil, but too much moisture can lead to root rot. If planting in a garden bed, it must be ensured that the soil is not too compacted.
Watering Needs
Water this plant deeply once a week, ensuring the soil is moist to a depth of 6 inches. In periods of high heat or drought, increase the frequency of watering to twice a week. Too much water will lead to root rot, so make sure the soil is well-drained and avoid allowing the plant to sit in standing water.
Fertilization
Eriogonum ochrocephalum S. Wats. var. alexandrae Reveal does not require frequent fertilization. A balanced fertilizer can be applied once a month during the growing season (spring through fall) to encourage growth. Be sure to follow the instructions on the package for the appropriate amount of fertilizer to apply.
Pruning
Prune this plant in the late winter or early spring before new growth begins. The plant should not be trimmed back by more than one-third of its total size. Dead or damaged branches can be removed at any time, and the plant can be shaped to maintain its desired size and shape.
Propagation of Eriogonum ochrocephalum S. Wats. var. alexandrae Reveal
Eriogonum ochrocephalum S. Wats. var. alexandrae Reveal is commonly known as yellowhead wild buckwheat. Propagation of this plant can be done through the following methods:
Seed Propagation
The most common method of propagating Eriogonum ochrocephalum S. Wats. var. alexandrae Reveal is through seed propagation. The seeds can be sown in containers or directly in the ground during the spring season. Before planting, it's best to scar the seed coat lightly with sandpaper or a small file to promote germination. The soil should be fertile, well-draining, and moist. Once the seeds are planted, it's important to keep the soil moist until the plants are established.
Division
Eriogonum ochrocephalum S. Wats. var. alexandrae Reveal can also be propagated through division. This method involves separating the plant clumps and planting them in a new location. The best time to propagate through division is during the fall or early spring season when the plant is dormant. The soil should be well-amended with organic matter and kept moist until the plants are established.
Cuttings
Propagation through cuttings is possible but can be a bit trickier than seed propagation or division. Stem cuttings of the plant can be taken during the summer season. The cuttings should be rooted in a sterile and well-draining soil mix. It's important to keep the soil moist and provide adequate shade until the cuttings establish roots. This method of propagation is best done with the help of an experienced gardener or horticulturist.
Disease Management
Eriogonum ochrocephalum S. Wats. var. alexandrae Reveal is susceptible to several diseases that can impact its growth and productivity. Some of the common diseases that might affect this plant are:
- Root rot: This disease is caused by the fungal pathogen Phytophthora cinnamomi, which attacks the plant's roots. Symptoms include wilting, yellowing of leaves, and plant death. To manage this disease, it is recommended to ensure optimal drainage to prevent waterlogged soil conditions. Fungicides can also be applied to infected plants.
- Powdery mildew: This disease is caused by the fungal pathogen Erysiphe cichoracearum, which forms a white powdery coating on the leaves of infected plants. To manage this disease, it is recommended to remove the infected leaves and apply fungicides as necessary.
- Leaf spot: This disease is caused by the fungal pathogen Cercospora or Erysiphe spp., which results in circular lesions on the leaves of infected plants. To manage this disease, it is recommended to remove the infected leaves and apply fungicides as necessary.
Pest Management
Aside from diseases, Eriogonum ochrocephalum S. Wats. var. alexandrae Reveal is also prone to pest infestations that can cause extensive damage to the plant. Some of the common pests that might affect this plant are:
- Spider mites: These pests are small and difficult to detect, but their presence can be recognized by the webbing they produce on the leaves of infected plants. To manage these pests, it is recommended to wash the plant with a strong stream of water, prune heavily infested parts, or apply insecticidal soap.
- Aphids: These pests feed on the plant sap and excrete a sticky substance that attracts ants and promotes the growth of sooty mold. To manage these pests, it is recommended to wash the plant with a strong stream of water, prune heavily infested parts, or apply insecticidal soap.
- Caterpillars: These pests feed on the leaves and stems of the plant and can cause extensive damage if left unchecked. To manage these pests, it is recommended to prune heavily infested parts or apply Bacillus thuringiensis (Bt) insecticide.
