Greek Valerian

Greek Valerian (Polemonium) - A small family of Phloxworts, mostly from N. America. A few of them are familiar in gardens, and among the best are the following:-

Polemonium Californium Eastw Moving Ploemonium

Polemonium Californium Eastw Moving Ploemonium

Polemonium occidentale Greene western polemonium

Polemonium occidentale Greene - western polemonium

Polemonium pulcherrimum Hook. - Greek Valerian

Polemonium pulcherrimum Hook. - Greek Valerian

Polemonium Confertum - This is one of the finest of all, with slender deeply-cut leaves and dense clusters of deep blue flowers on stoutish stems about 6 inches high. It requires a warm spot in the rock garden and a well-drained, deep, loamy soil. Though it requires plenty of moisture in summer, excessive dampness about the roots in winter is hurtful. Rocky Mountains.

Polemonium Humile - A truly alpine plant with pale blue flowers on stems a few inches high. In a dry situation and a light sandy soil it is hardy, but on a damp subsoil not so. P. mexicanum is similar but larger, and being only of biennial duration is scarcely worth cultivating. There is a garden form, Richardsonii, of much stronger growth and with far larger flowers, as many as a score of deep blue bells with a yellow eye sometimes coming in one cluster. N. America.

Polemonium Reptans - An American alpine plant, and, though far inferior in beauty to P. confertum, is worth growing. Its stems are creeping, and its slate-blue flowers form a loose drooping panicle 6 or 8 inches high. Snails devour it ravenously, especially the scaly root-stocks during winter. P. sibiricum, grandiflorum, and foliosissimum much resemble P. caeruleum, but are more vigorous, with larger flowers.

Jacobs Ladder (Polemonium Coeruleum) - Besides the original blue-flowered species, there is a variety with white blossoms, a second, acutiflorum, in which the petals are narrow and pointed.

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