Overview
Keckiella rothrockii (Gray) Straw var. jacintensis (Abrams) N. Holmgren is a plant species that belongs to the family Scrophulariaceae. It is primarily found in the Western United States and is known for its unique features and uses.
Origin and Common Names
Keckiella rothrockii (Gray) Straw var. jacintensis (Abrams) N. Holmgren is native to California in the United States. It is commonly known as the Pine Hill Keckiella because of its preference for growing in pine forests. The plant has also been referred to as the blue keckiella, Jacob's ladder keckiella, and lupine-leaved keckiella.
Appearance
The Pine Hill Keckiella is a perennial herb that grows up to 1.5 meters tall. It typically has an upright stem covered with hair and oval-shaped leaves that grow up to 6 cm long. The leaves also have a silvery underside with margins that curve downward. The Pine Hill Keckiella produces small, yellowish-green flowers that grow in clusters at the top of the stem. The flowers bloom in the summer, and the plant usually goes dormant in the winter.
Uses
The Pine Hill Keckiella has several traditional medicinal uses among indigenous peoples. It is used as a pain reliever for headaches, sore muscles, and arthritic pain. It is also used to treat respiratory ailments such as coughs, colds, and bronchial infections. In addition, the plant has antibacterial properties and can be used topically to treat wounds and burns.
The Pine Hill Keckiella is also used for landscaping purposes due to its unique appearance and adaptability. It is tolerant of dry soil and can grow in full sun or partial shade, making it a versatile plant for gardens and other landscaping projects.
Overall, Keckiella rothrockii (Gray) Straw var. jacintensis (Abrams) N. Holmgren is a valuable plant species with various traditional and modern uses that make it a versatile and significant part of California's flora.Light Requirements
Keckiella rothrockii var. jacintensis is adapted to grow in full sun to partial shade conditions. It can tolerate direct sunlight, but a shady spot with filtered light is preferred, especially during the hottest parts of the day.
Temperature Requirements
This plant grows naturally in mountainous regions and can tolerate cold temperatures. However, it needs moderate temperatures to thrive. Ideally, the temperature range should be between 10-21°C (50-70°F). Extreme heat can cause the plant to wilt, and frost can damage its foliage and flowers.
Soil Requirements
The soil for Keckiella rothrockii var. jacintensis should be well-draining and nutrient-rich. A slightly acidic to neutral soil with a pH range of 5.5-6.8 is best. The plant prefers rocky, gravelly, sandy, or loamy soils and can tolerate drought-like conditions. Clay soils that retain water for long periods are to be avoided, as they can cause the roots to rot.
Cultivation of Keckiella rothrockii var. jacintensis
Keckiella rothrockii var. jacintensis, also known as Bush Penstemon, is an evergreen shrub that grows naturally in rocky soils and cliffs in California, United States. Its cultivation can be done both in containers and in gardens, but specific conditions are required for its optimal growth.
When planting in a garden, choose a location with well-draining soil and where the plant can receive full sun to partial shade. The soil should be moderately fertile, but avoid adding too much organic matter as it may cause root rot.
If planting in a container, choose a pot at least 12 inches in diameter and fill it with a well-draining potting mix. Place the pot where it can receive at least 4-6 hours of direct sunlight per day.
Watering Needs
Keckiella rothrockii var. jacintensis requires moderate watering. Water only when the soil is dry to the touch, but do not allow the soil to completely dry out. Overwatering can lead to root rot, so make sure the soil has good drainage. During the hot summer months, the plant may require more frequent watering.
Fertilization
Keckiella rothrockii var. jacintensis does not require regular fertilization. However, in poor soils or when growing in containers, you can apply a slow-release fertilizer in early spring. Avoid using high-nitrogen fertilizers as they may cause excessive leaf growth at the expense of flowers.
Pruning
Prune Keckiella rothrockii var. jacintensis after flowering to promote compact growth and to extend its lifespan. Remove any dead or damaged branches and trim back the tips of the remaining branches. Avoid hard pruning, as the shrub may not recover from it. In addition, removing too many branches may cause the plant to focus on vegetative growth instead of flower production.
Propagation of Keckiella rothrockii var. jacintensis
There are several propagation methods that can be used for Keckiella rothrockii var. jacintensis including seed propagation, stem cutting propagation, and division propagation.
Seed propagation
Keckiella rothrockii var. jacintensis can be propagated by seed but it is a slow process. The plant produces small seeds that can be collected in the late summer or early fall. The seed should be planted in a well-draining soil mix and kept moist until germination occurs.
Stem cutting propagation
Propagation of Keckiella rothrockii var. jacintensis can also be done through stem cuttings. Take cuttings in the early summer, making sure to include two to three nodes. Dip the cuttings in rooting hormone and plant in a light, well-draining soil mix. Keep the cuttings moist and in a warm, bright location until roots develop.
Division propagation
Division is another method used to propagate Keckiella rothrockii var. jacintensis. In the fall, lift the plant and separate it into smaller sections, each with its own roots. Ensure that each new section has enough leaves and roots to support itself. Plant the new sections in a well-draining soil mix and keep moist until established.
Disease management
Keckiella rothrockii is generally a hardy plant and not prone to many diseases. However, the following diseases might affect the plant:
- Root rot: This disease is caused by fungi that thrive in waterlogged soil. To prevent root rot, it is essential to plant your Keckiella rothrockii in well-draining soil.
- Powdery mildew: Powdery mildew is a fungal disease that appears as a white, powdery substance on the plant's leaves. To control powdery mildew, keep the foliage dry and improve air circulation around the plant.
- Leaf spot: Leaf spot is a fungal disease that causes spots on the plant's leaves. To prevent leaf spot, avoid overhead watering and keep the foliage dry.
To control or prevent the spread of fungal diseases, you can use fungicides or natural remedies, such as neem oil or a mixture of baking soda and water. However, make sure to follow the instructions on the product label and wear protective clothing and equipment.
Pest management
Keckiella rothrockii is relatively resistant to pests, but some insects and other pests may still invade the plant. Here are some of the most common pests that might affect the plant:
- Aphids: Aphids are tiny insects that suck the sap from the plant's leaves and stems. To control aphids, you can spray the plant with a mixture of dish soap and water, or release natural predators such as ladybugs or lacewings into the garden.
- Spider mites: Spider mites are common pests that suck the sap from the plant's leaves and cause yellowing or stippling. To control spider mites, you can spray the plant with a mixture of neem oil and water or prune the affected parts of the plant.
- Thrips: Thrips are tiny insects that feed on the plant's leaves and flowers, causing them to distort or discolor. To control thrips, you can spray the plant with insecticidal soap or neem oil, or release natural predators such as predatory mites or minute pirate bugs.
In conclusion, Keckiella rothrockii is a hardy plant that requires minimal disease and pest management. However, it is always essential to monitor the plant regularly and take action immediately if you notice any signs of disease or pest infestation.
