How to Grow Jacob’s Ladder (Polemonium)
Introduction
Jacob’s ladder, also known as polemonium, is a beautiful perennial that adds charm to any garden. It’s easy to grow and requires minimal care, making it perfect for beginners and experienced gardeners alike.
Choosing a Location
Jacob’s ladder prefers partial shade and moist, well-drained soil. It can be planted in borders, beneath trees, or in woodland gardens. Avoid planting in areas that receive too much direct sun, as this can scorch the leaves.
Planting
Plant Jacob’s ladder in early spring or autumn. Dig a hole twice the width of the root ball and just as deep. Place the plant in the hole and fill in the soil around it, firming it gently. Water well after planting.
Care
Jacob’s ladder is a low-maintenance plant. Keep it well-watered until established, then water regularly during dry spells. Deadhead spent flowers to encourage more blooms. Cut back the plant to the ground in autumn.
Propagation
Jacob’s ladder can be propagated by seed or division. To collect seeds, wait until the flowers have faded and turned into dry, brown pods. Sow the seeds in autumn or spring. To divide the plant, dig it up in early spring and separate the root ball into sections. Replant the sections immediately.
Pests and Diseases
Jacob’s ladder is generally pest-free. However, it can occasionally be affected by powdery mildew. To prevent this, avoid watering the leaves and plant susceptible plants far apart to improve air circulation.
Buying Jacob’s Ladder
Jacob’s ladder is available to buy as seed or plants. Popular cultivars include ‘White Pearl’, ‘Blue Pearl’, and ‘Brise D’Anjou’. Always check plants for signs of damage or disease before planting.