Jacob's Ladder (Polemonium caeruleum) is sometimes also referred to as Blue Sky's Ladder. The perennial, which forms groups and is up to 90 centimeters high, develops panicles of pale blue flowers with bright yellow stamens on erect stems from the end of May to July. It self-seeds heavily and can become a nuisance.
Jacob's ladder feels most comfortable in the sun
Jacob's ladder needs a sunny location
The Jacob's ladder prefers a place in the garden that is as sunny as possible to slightly partially shaded (although always light!). The soil should be nutrient-rich and not too dry - quite the opposite, because the perennial prefers a rather damp location. Nevertheless, the soil should be permeable, because waterlogging is not tolerated.
Ideal for natural gardens
The species, which occurs naturally on wet meadows in Europe, Asia and Northern Europe, should also be used in the garden accordingly. It is well suited for natural designs and in combination with non-harassing accompanying plants such as dog chamomile (Anthemis). You can also place Jacob's ladders in herb beds, provided the soil is moist enough.
tips
Jacob's ladders should be watered when it's dry in summer. Cut out wilted inflorescences regularly to prolong the flowering period.