Nigra Hollyhock is shockingly beautiful with its chocolate-red, nearly black blooms. Nigra Hollyhock creates an impressive impact in front of light-colored walls and fences. A true classic, Nigra Hollyhock was planted in the gardens at Monticello by Thomas Jefferson. Nigra Hollyhock grows up to 6 feet tall and features near-black blooms with just a hint of red. Nigra Hollyhock flowers mid to late summer and is gorgeous planted out by the old white outhouse or in the back of the flowerbed. Botanical Name: Alcea rosea Life Cycle: Perennial Light Requirement: Full Sun Planting Season: Spring, Fall Plant Type: Tall Green Stems with Deep Red, Nearly Black Blossoms. Features: Open Pollinated, Attracts Pollinators, Easy to Grow Maintain Color: Deep Red, Black Blooms: Summer, Late Summer, Early Fall, Fall Plant Height: 4-6 feet Plant Spacing: 18-36 inches Planting Depth: 1/4 inch Sowing Method: Direct Sow Cold Stratification: No Hardiness Zones: 3, 4, 5, 6, 7, 8 Days to Maturity: 115