Overview
Phlox austromontana Coville ssp. densa (Brand) Wherry, also known as mountain phlox, is a flowering plant that belongs to the genus Phlox and family Polemoniaceae. This plant is native to the dry valleys and slopes of the Southern Rocky Mountains and the southwestern United States.
Appearance
Mountain phlox is a small, mat-forming perennial that grows up to 10 cm tall. It has lance-shaped leaves that are arranged opposite each other and are 1-2 cm long. In the summer, the plant produces light pink to lavender flowers that are trumpet-shaped and bloom in clusters. The flowers are 1-2 cm wide and have five petal-like lobes. The plant has a short blooming season, typically blooming in June and July.
Common Names
Aside from mountain phlox, Phlox austromontana Coville ssp. densa also goes by several other common names, such as thickleaf phlox, Brand's phlox, and dense phlox.
Uses
The Native Americans of the Southwest have used mountain phlox for a variety of medicinal purposes, such as treating headaches and respiratory problems. The plant is also used in landscaping, as it is an attractive groundcover that can provide a splash of color in rock gardens, borders, and slopes. Mountain phlox is a hardy plant that is easy to grow and maintain, making it a popular choice for gardeners who want a low-maintenance and drought-tolerant plant.
Light Requirements
Phlox austromontana Coville ssp. densa (Brand) Wherry typically grows best in full to partial sunlight. In areas with hot summer temperatures, it may benefit from some afternoon shade to protect it from scorching.
Temperature Requirements
This plant species is native to the southern Rocky Mountains, where it has adapted to a range of temperatures. However, it generally prefers cooler temperatures and is most commonly found in high-elevation areas. In cultivation, it can tolerate a wide temperature range but grows best between 50-70°F (10-21°C) and experiences reduced growth above 80°F (26°C).
Soil Requirements
The ideal soil for Phlox austromontana Coville ssp. densa (Brand) Wherry is well-draining, humus-rich, and slightly acidic to neutral (pH 5.8-7.0). It is adaptable to a range of soil types, including loam, sandy soil, and rocky soil. However, it does not tolerate waterlogged or overly dry soil conditions.
Cultivation Methods
Phlox austromontana Coville ssp. densa is a type of perennial plant which is native to the Rocky Mountains of North America. It grows best in full sun exposure and requires well-drained soil with moderate moisture retention. The plant thrives in elevations ranging from 6,000 to 10,000 feet, and it is quite hardy and tolerant of cold temperatures.
You can cultivate Phlox austromontana Coville ssp. densa using seeds or cuttings. The seeds should be sowed on the soil surface in early autumn or early spring. Ensure that the soil is moist, and cover the seeds with a thin layer of soil. The cuttings should be taken in early spring from the previous year's growth, then rooted in a pot at room temperature before planting in the garden.
Watering Needs
Phlox austromontana Coville ssp. densa requires moderate watering, especially when the plant is young or during periods of drought. It is essential to avoid over-watering the plant as it can lead to root rot, which may ultimately cause the plant to die. You should water the plant once a week, ensuring that the soil is moist but not waterlogged. During the winter, when the plant is dormant, you can reduce watering to once a month.
Fertilization
Phlox austromontana Coville ssp. densa does not require frequent fertilization. However, you can apply a slow-release fertilizer once a year in early spring before the growing season begins. Alternatively, you can apply a balanced liquid fertilizer every two weeks during the growing season. Over-application of fertilizer can cause the plant to produce less foliage, and it can also lead to a reduction in flowering.
Pruning
Phlox austromontana Coville ssp. densa requires minimal pruning, and it is best to allow the plant to grow naturally. However, you can prune the plant to remove dead or diseased branches or to control its shape. The best time to prune is in early spring before the growing season begins. Avoid pruning in late summer or early autumn as it can stimulate new growth, which may not have enough time to harden off before the winter.
With proper cultivation, careful watering, judicious fertilization, and minimal pruning, Phlox austromontana Coville ssp. densa should thrive in your garden and provide beautiful blooms for you to enjoy.
Propagation of Phlox austromontana Coville ssp. densa (Brand) Wherry
Phlox austromontana Coville ssp. densa (Brand) Wherry, commonly known as mountain phlox, is a native perennial plant that is found in the high mountains of the western United States. It is known for its beautiful pink flowers and low-growing habit that makes it perfect for rock gardens, borders, and ground covers. While it is generally considered easy to grow, proper propagation is key to ensure healthy and vigorous plants.
Propagation by Division
Propagation by division is one of the most effective and popular methods of propagating Phlox austromontana Coville ssp. densa (Brand) Wherry. It is best done in early spring, just as new growth begins to emerge.
To start, gently dig up the existing plant and carefully remove the soil from the roots. Then, using a sharp and sterile knife or garden shears, divide the clump into smaller sections. Each section should have at least two to three healthy stems and a healthy root system.
Before planting the divided plants, prepare the soil by adding organic matter such as compost or well-rotted manure. Plant each section in a hole that is deep enough to accommodate the root system and firm the soil around the plant.
Propagation by Seed
Propagation by seed is also an option, but it can be challenging as the seeds have a very low germination rate and require specific conditions to grow.
The best time to plant the seeds is in late fall or early winter. Start by collecting seeds from the plant when the capsules have turned brown and are beginning to open. Store them in a cool and dry place until planting time.
Before planting, prepare a seedbed by mixing organic matter and soil. Spread the seeds thinly on the surface of the soil, then cover them with a thin layer of soil. Keep the soil moist but not waterlogged, and maintain a consistent temperature of around 60°F.
With the right care and attention, the seeds should germinate within a few weeks. Once the seedlings have grown large enough to handle, transplant them into individual pots filled with a well-drained potting mix. After the last frost, the plants can be planted in their permanent location.
Disease and Pest Management for Phlox austromontana Coville ssp. densa (Brand) Wherry
Phlox austromontana Coville ssp. densa (Brand) Wherry, also known as dense phlox or groundpink, is a beautiful perennial plant that is commonly grown in rock gardens, wildflower meadows, and border edging. Like any other plant, it is susceptible to diseases and pests, which can cause serious damage if not managed properly. Here, we discuss some of the common diseases and pests that might affect Phlox austromontana and suggest some ways to manage them.
Diseases
Fungal diseases are the most common problems that affect Phlox austromontana. Some of the common fungal diseases that might infect the plant include:
1. Powdery mildew
Powdery mildew is a fungal disease that affects the foliage of Phlox austromontana. It appears as a white, powdery substance on the leaves, stems, and flowers. To manage powdery mildew, prune the infected parts immediately and dispose of them away from the plant. Provide good air circulation, avoid overcrowding of plants, and ensure adequate spacing between them to reduce humidity around the plants. Fungicides containing sulfur or neem oil can also be used to control powdery mildew.
2. Rust
Rust is another common fungal disease that affects Phlox austromontana. It appears as orange or brown spots on the leaves and stems. To manage rust, prune the infected parts and dispose of them away from the plant. Ensure good air circulation, avoid overhead watering and provide adequate spacing between plants to reduce humidity. Fungicides containing copper can also be used to control rust.
Pests
Phlox austromontana is also susceptible to pest infestations. Some of the common pests that might affect the plant include:
1. Spider mites
Spider mites are tiny pests that suck the sap from the leaves of Phlox austromontana, causing them to turn yellow and dry out. To control spider mites, spray the plant with a forceful stream of water to knock off the pests. In severe infestations, use insecticidal soap or neem oil to control the pests.
2. Aphids
Aphids are small, pear-shaped insects that suck the sap from the leaves and stems of Phlox austromontana, causing them to wilt and deform. They also excrete honeydew, which attracts ants and promotes the growth of sooty mold. To manage aphids, spray the plant with a forceful stream of water to knock off the pests. In severe infestations, use insecticidal soap, neem oil, or horticultural oil to control the pests.
By taking proactive measures to manage diseases and pests, you can maintain the health and beauty of Phlox austromontana and enjoy its lovely blooms year after year.
