Geranium 'Johnson's Blue', commonly known as Johnson's Blue geranium, is a beloved and reliable perennial prized for its vibrant blue flowers and attractive foliage. This Geranium cultivar forms a spreading mound of deeply lobed, green leaves and produces a profusion of saucer-shaped, clear blue flowers from late spring to summer. Its long blooming period, easy care, and ability to attract pollinators make it a valuable addition to gardens, borders, and rockeries, adding a touch of vibrant colour and charm to various settings. It belongs to the Geraniaceae family.
Origin: Geranium 'Johnson's Blue' is a hybrid cultivar, likely a cross between Geranium himalayense and Geranium pratense.
Light: Geranium 'Johnson's Blue' thrives in full sun to partial shade. It prefers at least 6 hours of sunlight per day for optimal flowering.
Water: Water regularly, especially during dry periods and the first year after planting. Once established, it is relatively drought-tolerant. Allow the soil to dry out slightly between waterings.
Soil: Geranium 'Johnson's Blue' prefers well-drained soil. It can tolerate a range of soil types, but thrives in fertile, loamy soil. Avoid heavy clay soils, which can retain too much moisture.
Fertilising: Geranium 'Johnson's Blue' is not a heavy feeder. Fertilise sparingly in spring with a balanced slow-release fertiliser. Avoid over-fertilising, as this can lead to excessive foliage growth at the expense of flowers.
Pruning: Cut back the plant after the first flush of blooms to encourage repeat flowering and maintain a tidy appearance. In autumn, cut back the plant to tidy it up.
Pests and Diseases: Geranium 'Johnson's Blue' is generally pest and disease resistant, but keep an eye out for slugs, snails, and powdery mildew.
Uses: Geranium 'Johnson's Blue' is primarily grown as an ornamental plant for its attractive flowers and foliage. It's a popular choice for gardens, borders, rockeries, and ground cover. It also attracts pollinators like bees and butterflies.
Toxicity: Geranium 'Johnson's Blue' is generally considered non-toxic to humans and pets. However, it is always best to keep plants out of reach of pets and children who might try to eat them.