POLYEMONIUM caeruleum
jacob's ladder
A beautiful perennial forming a mount of bright green ladder-like leaves and stems to 80 cm bearing heads of blue flowers in summer.
From a group of some 25 species from cooler parts of the northern hemisphere, P caeruleum is the most widely cultivated. The new spring foliage is very eye-catching and is followed by dense clusters of lavender blue saucer shaped flowers each, about 2 cm across. It is best grown in moist fertile well draining soil in a sunny or lightly shaded position. It requires summer moisture, and is frost tolerant. It is not recommended for very hot conditions unless treated as an annual
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