| I recently purchased a Johnson's blue geranium, but can find no information on it in gardening reference sources such as Sunset Western Gardening Book. The tag says it is deciduous. My question: is it a true geranium and what variety is it? |
| Your Johnson's Blue is a hybrid Crane's-bill Geranium, hardy in zones 3-8. It will grow 18" high with an 18" spread. Geraniums are hardy perennials and should not be confused with annual geraniums which are in the genus pelargonium. The perennial geraniums grow 4 inches to 2 and a half feet tall depending on the species grown. The leaves are cut and can be almost fern-like. The smaller species may be used in the rock garden. Taller types are not invasive like some other perennials. The flowers are usually 1 to 2 inches in diameter. Flowering is best when the plants are grown in full sun although they tolerate some shade. 'Johnson's Blue' will produce vivid blue flowers over a long period of time if the spent blossoms are regularly removed. |
