Grow.Sow seeds indoors 6-8 weeks before last spring frost date. Sow ¼ inch deep in seed-starting formula. Keep the soil moist at 70-75 degrees F. Seedlings emerge in 14-21 days .
Cut.It can be cut back in late spring to reduce overall plant height and encourage a bushier appearance.
Temperature.15 – 20 °C.
Self-seeding.Grow from seed and enjoy growing with your family
Purple Giant Hyssop sets soft plumes of the palest purple flowers that top out at 6 feet, soaring above most other plants in the garden. The individual blossoms open over a period of several weeks summer through fall. That long bloom time, combined with high nectar content, makes this plant highly attractive to bees and butterflies, including the federally-endangered Rusty Patched Bumblebee (see photo). Birds feed on the seeds that follow. The sturdy, sqaure stems support foliage that turns a rich brown and provides upright interest throughout the winter months.
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