Other Common Names: Self-Heal, Heart-of-the-earth. Duration: Perennial. Bloom Time: Summer. Height: 6” to 12”. Spacing: 6” to 9”. Light: Full Sun to Part Shade. Soil Moisture: Medium. USDA Zone: 4a-9b. Germination: Fall plant or cold stratify at 40F for 1 month for best results. Sow seeds just below the soil surface at 70F and water. Heal All is a native wildflower that can be grown most anywhere, with a little extra water in very dry conditions! Heal All is both edible and medicinal. It can be used in salads, soups, stews, or boiled as a pot herb. Used as an alternative medicine for centuries on just about every continent in the world, and for just about every ailment known to man, Heal All is somewhat of a supposed cure-all, but does seem to have quite a number of medicinal uses that are constant! The leaves contain an effective astringent, helpful in stopping blood flow from a wound. Clusters of purple flowers attract butterflies. .