Overview
Coreopsis californica (Nutt.) H.K. Sharsmith var. newberryi (Gray) E.B. Sm. is a flowering plant species belonging to the family Asteraceae. It is commonly known as California tickseed or California coreopsis.
Origin
This plant is native to California and can be found in the state's coastal regions, from Santa Cruz to San Diego county.
General Appearance
California tickseed is a perennial herb that grows up to 1.5 feet tall. It features a slender stem and narrow, lance-shaped leaves that are bright green in color. The plant produces bright yellow daisy-like flowers that bloom from late spring through the fall.
Uses
Coreopsis californica is often grown as an ornamental plant in gardens and landscapes for its attractive yellow flowers. Its flowers are also used as a source of nectar by bees and butterflies. Additionally, this plant has been used in traditional medicine by Native Americans for its anti-inflammatory and pain-relieving properties.
Growth Conditions for Coreopsis Californica var. Newberryi
Light: Coreopsis Californica var. Newberryi prefers to grow in full sun, meaning it requires at least six hours of direct sunlight per day. They can tolerate some shade, but too much shade can cause the plant to grow more spindly and less floriferous.
Temperature: This plant is native to California and thrives in a Mediterranean climate. It prefers moderate temperatures between 60-80 degrees Fahrenheit (15-27 degrees Celsius). It can tolerate occasional frosts and heat, but extra precautions should be taken if temperatures dip below 20 degrees Fahrenheit (-6 degrees Celsius) or above 100 degrees Fahrenheit (38 degrees Celsius).
Soil: Coreopsis Californica var. Newberryi prefers well-drained soil that is nutrient-rich. It can tolerate sandy, loamy or clay soil types, but the soil pH should be neutral to slightly acidic (6.0-7.0). If the soil is too alkaline, it can cause iron deficiencies and stunt growth. Adding compost or aged manure to the soil before planting can improve soil structure and fertility.
Water: This plant has moderate water needs and should be watered once or twice a week during the growing season, depending on weather conditions. Overwatering can lead to root rot, so it's important to make sure the soil has adequate drainage. During times of drought or extreme heat, the plant may require more frequent watering.
Fertilizer: Coreopsis Californica var. Newberryi generally does not require a lot of fertilizer, but a light application of balanced fertilizer in the early spring can help encourage growth and flowering. Avoid using high-nitrogen fertilizer as this can promote foliage growth at the expense of flowering.
Cultivation
Coreopsis californica var. newberryi is native to California and is well-suited to grow in Mediterranean climates. To cultivate this plant, it is important to choose a site with full sun exposure and well-draining soil. The plant thrives in a pH range of 6.5-7.5.
Watering Needs
You should water Coreopsis californica var. newberryi regularly, providing about an inch of water per week. However, it is important not to overwater as this can lead to root rot. The frequency of watering depends on the local climate and soil conditions, and it is important to check soil moisture before watering.
Fertilization
Coreopsis californica var. newberryi typically does not require heavy fertilization. It is advisable to apply a slow-release fertilizer of 10-10-10 in the spring to encourage growth. Over-fertilization can lead to excessive growth, reducing the longevity of the plant.
Pruning
Pruning Coreopsis californica var. newberryi is essential for promoting healthy growth and flower production. After flowering, it is crucial to deadhead the plant to prevent the formation of seeds. Additionally, you can pinch back the plant's stem tips to encourage branching and more flower buds. Prune the plant in early spring, taking care to clear debris and remove dead or diseased growth.
Propagation of Coreopsis californica var. newberryi
Coreopsis californica var. newberryi is a beautiful perennial wildflower that produces bright yellow flowers that bloom in late spring to early summer. This plant is native to California and is commonly referred to as California Tickseed. Propagation of Coreopsis californica var. newberryi can be done through various methods, including seed propagation and vegetative propagation.
Seed Propagation
The easiest and most common way to propagate Coreopsis californica var. newberryi is through seed propagation. The plant produces numerous seeds which can be collected after the plant has finished blooming. The seeds can be sown directly into the ground, but it is recommended to start them indoors in pots first. This will allow for better control over the conditions of the seedlings and ensure that they germinate successfully. The seeds should be planted in a well-draining soil mixture and kept moist until they begin to germinate. Once the seedlings are large enough, they can be transplanted into the ground.
Vegetative Propagation
Vegetative propagation of Coreopsis californica var. newberryi can be done through division or stem cuttings. Division involves separating the root ball of an established plant into multiple segments, each of which can be transplanted as a new plant. This method is best done in the spring when the plant is just beginning to emerge from dormancy. Stem cuttings are taken from the parent plant in the spring or early summer, and rooting hormone is applied before they are planted in a well-draining soil mixture and kept moist until they root.
Regardless of the propagation method chosen, it is important to ensure that the new plants are planted in an area with good drainage and plenty of sunlight. Once established, Coreopsis californica var. newberryi requires little maintenance and will continue to produce stunning yellow flowers year after year.
Disease Management for Coreopsis californica var. newberryi
Coreopsis californica var. newberryi is generally a low maintenance plant with good resistance to diseases and pests. However, there are a few diseases that can affect the plant:
- Leaf Spot: This disease causes leaf spots, which can spread to stems and flowers. To manage this disease, remove and destroy any infected plants and maintain good air circulation around the plant to reduce humidity.
- Powdery Mildew: Powdery mildew appears as a white, powdery coating on the leaves. To manage this disease, prune affected leaves and increase air circulation by thinning the plant or removing nearby vegetation. Applying a fungicide can also help control powdery mildew.
- Rust: Rust is a fungal disease that causes orange-brown pustules on the underside of leaves. To manage this disease, remove and destroy any infected plant parts and avoid overhead watering.
Pest Management for Coreopsis californica var. newberryi
Coreopsis californica var. newberryi is resistant to pests but can be affected by a few common insects:
- Aphids: Aphids are small, green insects that can damage the plant by sucking sap from the leaves. To manage an infestation, spray the plant with a strong stream of water to dislodge the insects or apply an insecticidal soap.
- Spider Mites: Spider mites are tiny pests that damage the plant by sucking the sap from the leaves, causing wilting and yellowing. To manage an infestation, spray the plant with a strong stream of water to dislodge the insects or apply an insecticidal soap.
- Caterpillars: Caterpillars can damage the plant by eating the leaves. To manage infestations, handpick and remove the caterpillars from the plant or apply a biological pesticide.
