Overview:
Phlox subulata L. also known as creeping phlox is a species of flowering plant in the family Polemoniaceae. It is a native plant of eastern and central parts of the United States.
Common names:
The plant has various common names including creeping phlox, moss phlox or cushion phlox. It is also known as thrift, ground pink, and mountain pink.
General appearance:
The plant is a mat-forming evergreen perennial that grows low to the ground and can cover a large area. It spreads quickly, forming a dense carpet-like appearance that is about 6 inches tall and can be over 2 feet wide. The plant's leaves are narrow and elongated and have a bright green color. The flowers are star-shaped and have five petals. They can be pink, white, red, purple, or violet in color and bloom in late spring to early summer.
Uses:
Creeping phlox is commonly used as a groundcover plant in gardens, landscaping, and rock gardens. It is also an excellent choice for erosion control, as it has deep roots that hold the soil in place. The plant is considered deer-resistant, making it a popular choice for gardens in areas with high deer populations.
Light Requirements for Phlox subulata L.
Phlox subulata L. prefers full sun to partial shade, but it can tolerate some shade. It requires at least 6 hours of direct sunlight per day to grow and flower well. When grown in too much shade, it tends to become leggy and produce fewer flowers.
Temperature Requirements for Phlox subulata L.
Phlox subulata L. is a hardy plant that can survive in a wide range of temperatures. It grows best in temperate zones where the temperature ranges between 15 to 27°C. It can tolerate temperatures as low as -29°C in winter and as high as 40°C in summer.
Soil Requirements for Phlox subulata L.
Phlox subulata L. prefers well-draining soil that is slightly acidic to neutral. It can also tolerate slightly alkaline soil. The soil should be rich in organic matter and nutrients. Phlox subulata L. can grow in sandy soils, but it grows best in loam or clay loam soils. It does not tolerate poorly drained soils.
Cultivation Methods
Phlox subulata L. prefers to be grown in well-draining soil with a pH level between 6.0 and 7.0. It is tolerant of a variety of soil types, including sand, loam, and clay. This plant requires full sunlight to thrive, but it can also handle partial shade. It is best to plant Phlox subulata in the spring or fall when temperatures are cooler.
Watering Needs
Phlox subulata L. requires regular watering, especially during the first year after planting. The soil should be kept evenly moist but not saturated. Overwatering can cause root rot and damage the plant. During dry periods, it is important to water deeply and thoroughly.
Fertilization
Phlox subulata L. benefits from a balanced fertilizer applied in early spring. A slow-release fertilizer can also be used. Avoid fertilizing late in the season, as this can cause the plant to produce excessive foliage at the expense of flowers.
Pruning
Phlox subulata L. benefits from regular pruning to keep it tidy and promote vigorous growth. Pruning should be done in the spring after flowering to prevent the plant from becoming too leggy. Cut back the stems to just above the foliage. It is also important to remove any dead or damaged stems throughout the growing season.
Propagation of Phlox subulata L.
Phlox subulata, commonly known as creeping phlox or moss pink, is a low-growing and mat-forming perennial plant that produces an abundance of small, fragrant flowers in shades of pink, purple, and white. It is a popular choice for rock gardens, borders, and groundcovers due to its hardiness, ease of care, and attractive appearance. Propagation of Phlox subulata can be done using several methods.
Division
Division is the most popular propagation method for Phlox subulata. It involves separating the plant's roots and stems into smaller pieces and replanting them in a new location. The best time to divide Phlox subulata is in the spring when the plant starts producing new growth. To divide the plant, gently dig it up and separate the roots and stems into clumps. Each clump should have at least three stems and a good root system. Replant the clumps in well-draining soil and water them thoroughly.
Cuttings
Cuttings are another way to propagate Phlox subulata. This method involves taking a stem cutting from the parent plant and planting it in a rooting medium until it develops its own root system. Cuttings can be taken in the spring or early summer when the plant is actively growing. To take a cutting, use a sharp knife or shears to cut a stem that is 3-4 inches long. Remove the lower leaves and dip the cut end in rooting hormone. Plant the cutting in a well-draining rooting medium and keep it moist until new growth appears.
Seed
Phlox subulata can also be propagated from seeds, but this method can be challenging due to the plant's slow germination and irregular growth pattern. Seeds should be sown in the fall or early spring in a well-draining soil mix. Cover the seeds with a thin layer of soil and keep them moist. Germination can take up to four weeks. Once the seedlings develop their first set of true leaves, transplant them into individual pots or a well-prepared garden bed.
Conclusion
Propagation of Phlox subulata L. can be done using different methods, including division, cuttings, and seeds. Division is the most popular propagation method due to its simplicity and guaranteed success rate. Cuttings can be a good option when you want to propagate a specific cultivar, while seed propagation can be more challenging but allows for genetic diversity. Whatever method you choose, make sure to plant the Phlox subulata in well-draining soil and keep it moist until it establishes a vigorous root system.
Disease and Pest Management for Phlox subulata L.
Phlox subulata L., commonly known as creeping phlox, is a popular perennial plant used extensively in rock gardens and as ground cover. While it is a relatively low-maintenance plant, it is susceptible to certain pests and diseases that can affect its growth and appearance.
Common Diseases
One of the most common diseases that affects Phlox subulata is powdery mildew. This fungal disease appears as a white powdery substance on the leaves of plants. To manage this, it is important to improve air circulation around the plants by spacing them properly and providing adequate ventilation. Additionally, avoid overhead watering and instead water at the base of the plant to keep the foliage dry, and prune and discard infected plant parts to prevent the spread of the disease.
Another common disease for Phlox subulata is root rot. This fungal disease manifests as black and mushy roots and can ultimately kill the plant. To prevent this, ensure that the plant is growing in well-drained soil and avoid overwatering. Additionally, provide enough space between plants and consider using organic mulch to keep the soil moist but not waterlogged.
Common Pests
One of the most common pests to affect Phlox subulata is the spider mite. These tiny pests feed on the plant’s sap, causing yellowing and dryness of leaves, and damage to the plant’s overall vigor. To manage these pests, use a jet of water or insecticidal soap to dislodge them from the plant. Additionally, consider using predatory mites or insecticides to control their population.
Another common pest is the nematode. These are small, worm-like parasites that attack the plant’s roots, causing stunted growth and wilting. To prevent nematode infestations, avoid planting Phlox subulata in soil that has been previously infected with these pests. Additionally, ensure the plant is growing in well-draining soil and consider using organic soil amendments like compost to improve the soil structure and health.
Overall, managing pests and diseases for Phlox subulata requires a combination of preventative measures, proper cultural practices, and, in some cases, the use of chemical controls. By being proactive and closely monitoring the plant, homeowners can keep their Phlox subulata healthy and thriving.
