Botanical Name: Lupinus perennis. Hardiness: Perennial in USDA zones 3–8. Plant Dimensions: 24″–36″ tall, 18″ wide. Variety Information: ¾” blue to purple-blue flowers massed at the top of tall spikes. Exposure: Full sun. Bloom Period: Spring. Attributes: Attracts Polliantors, Drought Tolerant