Overview:
Crataegus kelloggii Sarg. is a species of hawthorn tree that belongs to the Rosaceae family. It is native to western North America, mainly found in California and Oregon. This plant is known for its unique physical appearance and its medicinal properties, which have been utilized for centuries by various cultures.
Appearance:
The Crataegus kelloggii Sarg. tree is a deciduous shrub that can grow up to 15-20 feet in height. It has a dense, thorny texture and produces clusters of beautiful white flowers in the springtime. The tree also bears small, round fruit that can range in color from red to black. The leaves are deeply lobed and have a glossy, dark green color that turns red/yellow during autumn.
Common Names:
The Crataegus kelloggii Sarg. tree is commonly known by several names, including Black hawthorn, Kellogg's hawthorn, and Thornapple.
Uses:
This tree has been used for its medicinal properties for centuries by various cultures. Native American tribes have used it to treat heart problems, digestive issues, and skin conditions. The tree's bark, leaves, and berries contain various compounds that have anti-inflammatory, antispasmodic, and antioxidant properties. Today, herbal supplements made from this plant are commonly used to support cardiovascular health and to improve digestion. The tree is also planted as an ornamental tree in gardens and parks.
Light Conditions
Crataegus kelloggii Sarg. prefers growing in full sun conditions. It may also tolerate partial shade but performs best when grown under full sunlight. The plant requires at least six hours of direct sunlight each day to thrive.
Temperature Requirements
The plant is well adapted to grow in a wide range of temperatures. However, it performs best in cool to warm temperatures. The optimal temperature range for this plant is between 15 and 25 degrees Celsius. It can also tolerate freezing temperatures during winter dormancy, as long as the soil remains moist.
Soil Conditions
The plant thrives well in well-draining soil that is rich in nutrients. It can grow in various soil types, including sandy, loamy, and clay soils. However, the soil should be slightly acidic to neutral, with a pH range of between 6.0 and 7.5. The soil should also be moist but well-draining, to prevent the roots from rotting.
Cultivation of Crataegus kelloggii Sarg.
The Crataegus kelloggii Sarg. is a deciduous plant which is commonly known as Kellogg's hawthorn or Kellogg hawthorn. It is a small tree that can reach up to 15 to 20 feet in height. It is an excellent plant for landscaping projects as it offers beautiful foliage, showy flowers and fruits. This plant can be propagated easily from seeds or cuttings, and it is a low maintenance plant.
Watering Needs
Crataegus kelloggii Sarg. plant requires regular watering during the first year of planting. After that, it can tolerate drought and irregular watering. However, it is best to water this plant deeply once a week during hot summer months and dry spells. The soil around the plant should be kept moist but not waterlogged. Overwatering can lead to root rot and other diseases, so it is important to ensure that the soil is well-drained.
Fertilization
It is essential to fertilize the Crataegus kelloggii Sarg. plant during the growing season. A balanced fertilizer with an equal ratio of nitrogen, phosphorous and potassium (NPK) should be applied in spring. In summer, it is best to use a fertilizer that is high in potassium as it helps the plant to produce more flowers and fruits. Fertilizers should be applied according to the manufacturer's instructions.
Pruning
Pruning is essential for the Crataegus kelloggii Sarg. plant as it promotes healthy growth, shape and flowering. Pruning should be carried out during the winter months when the plant is dormant. Dead, diseased, damaged and crossing branches should be removed. It is best to prune the plant lightly as it can affect the flowering and fruit production. The plant should be pruned to maintain a natural shape and remove any unwanted growth. It is best to hire a professional arborist for larger pruning tasks.
Propagation of Crataegus kelloggii Sarg.
Crataegus kelloggii Sarg., commonly known as Kellogg's hawthorn, can be propagated through various methods.
Seed Propagation
Crataegus kelloggii Sarg. can be propagated via seed. Collect ripe fruits from the plant during late summer or early autumn. Sow the collected seeds in well-drained soil after winter stratification. Germination occurs during spring.
Cuttings Propagation
Crataegus kelloggii Sarg. cuttings can be propagated through hardwood or softwood cuttings. Hardwood cuttings, consisting of woody stems in winter dormancy, should be collected in late autumn and planted in well-draining soil. Softwood cuttings, consisting of new stem growth in spring or early summer, should be collected in mid-summer and planted in a sandy mix.
Grafting
Grafting is another method to propagate Crataegus kelloggii Sarg. This method involves attaching a scion of the desired plant onto a rootstock of a closely related Crataegus plant. This method is used for clones or commercial propagation of this plant.
Overall, the propagation of Crataegus kelloggii Sarg. can be achieved through relatively simple methods, making it a viable option for both home gardeners and commercial growers.
Disease Management
Crataegus kelloggii Sarg., commonly known as Kellogg's hawthorn, can be prone to various diseases. The most common diseases affecting this plant are fire blight, leaf spot, and powdery mildew.
Fire blight is a bacterial disease that causes leaves and shoots to appear blackened and scorched. It can cause serious damage to the plant, especially if left untreated. The best way to manage fire blight is to remove the infected parts and destroy them immediately.
Leaf spot is a fungal disease that causes small brown spots on the leaves of the plant. If left untreated, it can cause defoliation and weaken the plant. The best way to manage leaf spot is to prune the affected areas and spray the plant with a fungicide.
Powdery mildew is a fungal disease that causes a white powdery coating on the leaves of the plant. It can stunt growth and reduce the health and vigor of the plant. The best way to manage powdery mildew is to prune the affected areas and spray the plant with a fungicide.
Pest Management
Crataegus kelloggii Sarg. can also be susceptible to pest infestations, particularly from spider mites and aphids.
Spider mites are small pests that feed on the leaves of the plant, causing them to yellow and wilt. The best way to manage spider mites is to remove the affected areas and spray the plant with an insecticidal soap or oil.
Aphids are small, soft-bodied insects that usually feed on the undersides of leaves. They can cause distortion and curling of the leaves and may also produce a sticky substance called honeydew. The best way to manage aphids is to remove the affected areas and spray the plant with a neem oil-based insecticide.
Regular monitoring and prompt action are essential to manage diseases and pests effectively in Crataegus kelloggii Sarg.. Proper plant care, including watering and fertilization, can also help the plant stay healthy and resist infestations. In severe cases, it may be necessary to consult a professional for expert advice and treatment.
