Overview
Phlox ×procumbens Lehm. (pro sp.) is a low-growing perennial plant that belongs to the Polemoniaceae family, which features popular ornamental plants like Jacob's ladder. This species is admired for its ability to create a vibrant groundcover in landscaping projects with its dense clusters of flowers.
Appearance
Phlox ×procumbens has small, light green leaves that form a mat on the ground. The stem grows up to 15cm high and sprouts a handful of small flowers at the top. Each flower has a diameter of about 1.5cm, with pale lavender petals that have a darker purple stripe. The flowers bloom from late spring to early summer and have a sweet fragrance that attracts bees and butterflies.
Origin and Common Names
Phlox ×procumbens is native to the southeastern United States. Its common names include prostrate phlox, moss phlox, or creeping phlox. The scientific name "Phlox" is derived from the Greek word for flame because of the plant's bright flowers.
Uses
Phlox ×procumbens is popular as a groundcover option in gardens and landscaping projects because of its low profile and colorful display of flowers. It thrives in well-draining soils and can tolerate moderate drought conditions. The plant reproduces easily and can be propagated from cuttings or division.
Light Requirements
Phlox ×procumbens Lehm. prefers to grow in full sunlight, but it can tolerate partial shade. Without enough sunlight, the plant may not bloom as profusely as it would in full sun.
Temperature Requirements
The plant thrives in cool to warm temperatures. It can tolerate frost and freezing temperatures for short periods, but, in general, temperatures below -10°C (14°F) could be harmful to the plant. On the other hand, temperatures above 30°C (86°F) may cause the plant to dry out and wilt.
Soil Requirements
Phlox ×procumbens Lehm. prefers well-drained, moderately fertile soil that is rich in organic matter. It grows best in slightly acidic to neutral soils, with a pH range of 6.0 to 7.0. The plant can tolerate some drought, but it prefers moist soil. Overwatering and poorly drained soil may lead to root rot and other diseases.
Cultivation
The Phlox ×procumbens Lehm. (pro sp.) plant, also known as the creeping phlox, is a herbaceous perennial that flourishes abundantly in rocky or sandy soil. This plant can withstand cold weather and requires full sunlight to grow. It is an excellent plant to grow in borders and rock gardens, and requires minimal maintenance.
Watering Needs
When it comes to watering, the Phlox ×procumbens Lehm. (pro sp.) plant is relatively undemanding. During its growing season, it requires regular watering. Water the plant deeply once a week, or more if the weather is dry. Ensure not to overwater, however, as it may cause root rot.
Fertilization
The creeping phlox plant requires regular fertilization to encourage healthy growth and blooming. Fertilize it once a month during the growing season, using a balanced, water-soluble fertilizer. Avoid using fertilizers that are high in nitrogen or phosphate as it may stimulate foliage growth and reduce blooming.
Pruning
The Phlox ×procumbens Lehm. (pro sp.) plant does not require significant pruning. However, it is essential to deadhead regularly to encourage continuous flowering. During the winter months, you can trim the plant to maintain its shape and prevent it from becoming overly large. Use clean and sharp pruning shears to make the cut, and avoid pruning more than a third of the plant at any time.
Propagation of Phlox ×procumbens Lehm.
Phlox ×procumbens Lehm. can be propagated by both seeds and vegetative methods.
Propagation by seeds:
The seeds of Phlox ×procumbens Lehm. can be sown directly outdoors in the spring or fall. Seedlings will emerge within 14–28 days. The seedlings can be thinned to 6–12 inches apart once they reach a height of 2–3 inches.
Propagation by vegetative methods:
Phlox ×procumbens Lehm. can also be propagated using vegetative methods such as cuttings and division.
Cuttings can be taken from healthy stem tips in the summer. Cuttings should be 3–4 inches in length and should be planted in a pot or tray with a rooting medium. The plants should be rooted in a well-lit, humid environment. Once roots have formed, the cuttings can be transplanted into individual pots or planted directly into the ground.
Division can be done in the spring or fall. The plant should be dug up and divided into smaller sections, making sure that each section has a good root system. The sections can be replanted into individual pots or directly into the ground.
Regardless of the propagation method chosen, Phlox ×procumbens Lehm. prefers well-drained soil and a sunny location.
Disease Management
Phlox ×procumbens Lehm. is susceptible to several diseases that can affect its growth and overall health. The following are some common diseases that affect this plant:
- Phytophthora root rot: This disease is caused by a soil-borne pathogen and can cause wilting, stunting, and yellowing of the plant. To manage this disease, ensure good drainage, avoid overwatering, and use disease-resistant varieties.
- Powdery mildew: This fungal disease can cause a white powdery coating on the leaves and affect the plant's vigor. To manage powdery mildew, ensure good air circulation, avoid overcrowding, and use fungicides if necessary.
- Crown rot: This disease is caused by a soil-borne pathogen and can cause the plant to wilt and die. To manage crown rot, avoid overwatering, improve drainage, and use disease-resistant varieties.
Pest Management
Phlox ×procumbens Lehm. can also be susceptible to certain pests that can harm the plant's growth and development. The following are some common pests that affect this plant:
- Aphids: These small insects suck sap from the leaves and stems, causing wilting and deformities. To manage aphids, use insecticidal soap or neem oil, encourage natural predators like ladybugs, and practice good garden hygiene.
- Spider mites: These tiny pests can cause yellowing and browning of leaves. To manage spider mites, regularly hose down the plant with water to remove them, use insecticidal soap or neem oil, and encourage natural predators like predatory mites.
- Thrips: These insects can cause stunted growth and deformities in the leaves. To manage thrips, use insecticidal soap or neem oil, practice good garden hygiene, and encourage natural predators like lacewings.
By practicing good disease and pest management techniques, you can help ensure that your Phlox ×procumbens Lehm. plant remains healthy and vigorous.
