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Jacob's ladder

Polemonium reptans · Polemoniaceae

The gardener's calendar

The right move for September

Ideal time to plant jacob's ladder: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.

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ID card

Foliage
Deciduous
Flowering
April to June, light blue to violet flowers
Adult size
20 to 30 cm tall, spreading habit
Growth
Fast
Hardiness
Very hardy, down to -20 °C
Origin
North America (United States)
Soil type
Well-drained, fertile, slightly moist soil

Care

Watering

Keep the soil moist but without excess water, particularly during spring growth and summer. Let the surface dry slightly between waterings. In winter, reduce watering once the plant enters dormancy.

Light exposure

Plant creeping phlox in partial shade or light shade for beautiful flowering. It also tolerates direct sun if the soil remains cool and moist, especially in temperate climates.

Soil preparation

Prepare rich soil, slightly acidic to neutral, enriched with organic matter to promote moisture retention. Good drainage remains essential to prevent root asphyxiation and rot.

Pruning and maintenance

Remove spent flowers regularly to extend blooming. After flowering, cut the foliage to ground level in late autumn or early spring to tidy up the clump and stimulate new growth.

Fertilizing

Apply balanced fertilizer in spring when growth resumes. A moderate amount of organic compost worked into the soil at planting is often sufficient for subsequent years.

Diseases and pests

Generally robust, creeping phlox mainly fears excess moisture which can promote root rot or leaf spots. Ensure good air circulation and avoid watering late in the day to prevent these issues.

Did you know?

Creeping phlox bears the scientific name 'reptans' because of its creeping, spreading habit, perfect for forming a flowering ground cover. It has been appreciated since the 17th century in Europe as an ornamental plant and was long used in traditional English shaded gardens.

Where to buy it

Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.

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Tips generated and checked by Viridia — adapt them to your local climate.