Origin
Polemonium reptans L. var. reptans is a species of flowering plant in the Polemoniaceae family. It is native to eastern North America, from Ontario south to Florida and west to Texas.
Common Names
This plant is commonly known as creeping Jacob's-ladder, spreading Jacob's-ladder, American Greek valerian, and abscess root.
Uses
Polemonium reptans L. var. reptans has been traditionally used for medicinal purposes. Its root has been used as a remedy for liver problems, diarrhea, and skin issues. The plant has also been used for its sedative properties by Native American tribes. Today, it is primarily used as an ornamental plant and can be grown as a ground cover or rock garden plant.
General Appearance
The creeping Jacob's-ladder is a low-growing, herbaceous perennial plant that spreads via runners. It typically grows to be 12-24 inches tall and has light blue or lavender flowers that bloom in the late spring or early summer. Its leaves are fern-like and are arranged in a basal rosette. The plant is generally easy to grow and prefers moist, well-draining soil in partial shade.
Light Requirements
Polemonium reptans L. var. reptans is typically found in shady areas throughout its range. This plant prefers partially shaded to fully shaded conditions. In its natural habitat, it can be found growing in open woods, along stream banks, and on shaded rocky slopes.
Temperature Requirements
Polemonium reptans L. var. reptans is a plant that prefers cooler temperatures. This species can tolerate a wide range of temperatures, but it grows best in cool to moderate climates. It is native to North America and can be found growing in areas that experience winter temperatures that can be quite cold. During the summer, this species prefers temperatures that are moderate and may struggle in areas that experience hot, humid summers.
Soil Requirements
Polemonium reptans L. var. reptans prefers well-draining soils that are rich in organic matter. It can grow in clay soils as long as they are not waterlogged. This species is moderately tolerant of drought, but it benefits from regular watering during long dry spells. The pH range for the soil should be between 4.5 and 7.5.
Cultivation of Polemonium reptans L. var. reptans
Polemonium reptans L. var. reptans, commonly known as creeping Jacob's ladder, can be grown in USDA hardiness zones 3 to 8. It prefers slightly acidic to slightly alkaline soil and partial to full shade. Provide well-draining soil with organic matter for optimal growth and vitality. This variety can spread aggressively, so it's best to plant it in areas with enough space.
Watering Needs
Polemonium reptans L. var. reptans prefers evenly moist (but not waterlogged) soil. Water regularly until established, then reduce frequency. During hot and dry periods, water more frequently to prevent dehydration and leaf scorching. Check soil moisture by inserting a finger into the soil and adding water if it feels dry.
Fertilization
Polemonium reptans L. var. reptans doesn't require heavy fertilization. In fact, excessive nitrogen can lead to weak and floppy growth. Apply a light application of balanced fertilizer once in early spring and again in mid-summer to boost growth and flowering. Alternatively, amend the soil with compost or aged manure in early spring to provide nutrients gradually.
Pruning
Cut back Polemonium reptans L. var. reptans after flowering to prevent self-seeding and to promote bushier growth. Pinch off the spent blooms and their stalks to encourage more flowers to form. Also, prune back any diseased, damaged, or dead stems as needed. Use sharp and sterilized pruners to prevent the spread of diseases.
Propagation of Polemonium reptans L. var. reptans
Polemonium reptans L. var. reptans, commonly known as spreading Jacob's ladder, is a beautiful perennial plant native to North America. It is primarily grown for its attractive foliage and delicate blue flowers that bloom in late spring to early summer. Propagation of this plant is typically done by vegetative means, such as division or stem cuttings.
Propagation by Division
Division is the most common method for propagating Polemonium reptans L. var. reptans. It is best done in late summer or early fall, after the plant has finished blooming. The steps for division are as follows:
- Carefully dig up the entire plant by digging around the edges of the root ball.
- Shake off the excess soil, and separate the plant into smaller sections using a sharp knife or garden spade.
- Each section should have several healthy stems and a portion of the root system.
- Replant the divisions immediately in a prepared garden bed, making sure to water well.
Propagation by Stem Cuttings
Propagation of Polemonium reptans L. var. reptans can also be done by stem cuttings taken from the parent plant. This method is typically done in early summer, when the plant is actively growing. The steps for stem cutting propagation are as follows:
- Select a healthy stem from the parent plant that is free of disease and pests.
- Using a sharp, clean knife, cut a 4- to 6-inch section of stem from the parent plant, just below a leaf node.
- Remove the lower leaves from the stem cutting, leaving only the top two or three leaves.
- Dip the cut end of the stem in rooting hormone powder.
- Plant the stem cutting in a container filled with a well-draining potting mix, and water well.
- Place the container in a bright, indirect light location and keep the soil moist. The cutting should root within a few weeks.
- Transplant the rooted cutting to a garden bed or larger container once it has established a healthy root system.
Propagation of Polemonium reptans L. var. reptans is relatively easy and can be done by either division or stem cuttings. With proper care, the propagated plants will quickly establish themselves and provide years of enjoyment in any garden setting.
Disease and Pest Management for Polemonium reptans L. var. reptans
Polemonium reptans L. var. reptans, commonly known as Jacob's ladder, is a perennial plant that is susceptible to some diseases and pests, which can cause significant damage if not well managed. Here are some common diseases and pests that might affect the plant and suggested ways for their management:
Diseases
Leaf spot: This is a fungal disease that causes brown spots on the leaves and can spread rapidly, leading to defoliation. To manage this disease, the affected leaves should be removed and destroyed, and the plant can be treated with a fungicide.
Verticillium wilt: This is a soil-borne fungal disease that can cause wilting of the plant, yellowing of leaves, and stunted growth. The best way to manage this disease is to ensure the plant is grown in well-drained soil and practice crop rotation.
Root rot: This is a fungal disease that can cause the roots to turn brown, soft, and eventually die. To manage this disease, the plant should be grown in well-draining soil. If the disease has already affected the plant, it is advisable to remove and destroy it to prevent the spread of the disease.
Pests
Aphids: Aphids are small insects that can cause curling and stunted growth of the leaves. They can be managed by using insecticidal soaps, neem oil, or spraying the plant with a mixture of water and dish soap.
Spider mites: These are tiny spiders that can damage the leaves, causing them to have discoloration and speckled appearance. They can be managed by spraying the plant with water or using insecticidal soap or neem oil.
Slugs: Slugs can cause significant damage to the plant by feeding on the leaves and stems. They can be managed by handpicking them from the plant or using organic slug baits.
Japanese beetles: These insects can cause defoliation, leaving the plant weak and susceptible to other pests and diseases. They can be managed by handpicking them from the plant or using insecticides such as pyrethrin.
By managing diseases and pests effectively, Polemonium reptans L. var. reptans can thrive, producing beautiful blooms and adding value to your garden or landscape.
