Home > Hardy Geraniums > All Other Geraniums
Family: GeraniaceaeMain Season: SummerFlower Colour: BlueLeaf Colour: GreenFoliage: DeciduousPosition: SunSoil Type: Ordinary, medium loamHeight: 45cm to 60cm (18" to 2')Peat Free? Not yetHardiness Guide: RHS H7 minimum at least -20CPot Size: 9cm
None available at present.
(Geranium pratense x Geranium himalayense)
The true plant, makes a mound of sky-blue flowers May to July. Some repeat later. Tolerates dry sunny position when established, or light shade. Cut down after flowering. 60cm.
Although one of the most common Hardy Geraniums in gardens, 'Johnson's Blue' has now got some stiff competition for space in modern plantings. Most alternatives have reddish or purplish veins, whereas the true Geranium 'Johnson's Blue' has no colour to the veins at all, giving the flowers a paler look. But, 'Johnson's Blue' doesn't flower for long, maybe 6 weeks - perhaps Geranium 'Criss Canning' or the slightly larger Geranium 'Brookside' are better?
Raised in Holland by B Ruys from seed from A T Johnson in 1950, First described by Graham Stuart Thomas in his Perennial Garden Plants - The Modern Florilegium in 1962.
We have seen many, many imposters sold under this name over the years, most commonly Geranium himalayense 'Gravetye' and forms of Geranium x magnificum. The easiest way to identify many of these imposters is that they tend to have red veins or a dark centre to the flower whereas the true Geranium 'Johnson's Blue' has a pale (near white) centre and no red veins.