The seeds are ready when the flower nods over face first, drops it's petals and starts to turn brown. If you want to save the seed, cut off the flower as soon as it begins to nod, otherwise the songbirds will eat every single seed. Store the flowers in a dry, well-ventilated spot for a week or two, then just rub the seeds off./n Ready for Spring, soil temp 70F+, Medium water. Slow-release fertilizer will increase blooms./n I will send you how to plant purple giant hyssop to your email
