Hyssop (Hyssopus officinalis) is a hearty perennial shrub in the mint family that has a spiky, upright habit and narrow tongue-like leaves. It's a dark, vibrant green when it gets enough nourishment, and sports small, vibrant blue flowers (some variations produce pink, lavender, purple or white flowers). It has an attractive appearance in the garden, but where it really shines is as an herbal
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