- Name: Purple Knockout Salvia - Other Common Names: Lyre-Leaf Sage / Lyre-Leaved Sage - Scientific Name: Salvia Lyrata 'Purple Knockout' - Color: Dark Purple Variegated Leaves / Purple Stems / Lavender Blue Flowers - Plant Seeds: Outdoors After Danger Of Frost / Indoors Weeks Before Last Frost - Bloom Time: Late Spring - Early Summer - Hardiness Zone: 5 - 9 - Plant Height: 14 - 22" - Plant Spacing: 12 - 24" - Light Requirements: Sun - Part Shade - Soil & Water Preferences: Average - Dry - Quantity: 15 Seeds - Other: More Info On This Wonderful Plant Coming Soon!