The common names for the Hardy perennial Agastache include Hyssop and Mosquito plant.
Plants typically bloom in the Summer with spiked flowers.
Agastache are large plants that can grow between 60 and 180 cm in height. Hyssop may have spikes of blue, green or purple flowers. These plants are beautiful as part of a wild-flower garden.
Agastache Apricot sprite photograph by Anniesannuals.
It is best to sow Hyssop and Mosquito plant seeds just below the soil surface, with a spacing of 25 to 30cm, in the autumn.
Agastache prefers lightly shaded or preferably full sunlight conditions. The soil should not be rich if you want good blooms. It should be well drained. Seeds require between 30 and 90 days to germinate. When starting off indoors it is best to sow them seven to eight weeks before planting outside, at a temperature of 13 degrees centigrade.
Agastache should be fed with fertiliser once a year in the spring. Agastache plants generally take two years to come into bloom after initial planting, and should be replaced after two years of flowering for best results.
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