Perennial: This appears to be a naturally-occurring, mildew-free hybrid between Phlox maculata and possibly Phlox glaberrima. Tall, fragrant flower spikes up to one foot tall that completely cover the foliage. Attracts butterflies and hummingbirds. Foliage color: glossy-green. Bloom time: spring-summer. Bloom color: large, pure white. Height: 12-20". Spread: 2 feet. Exposure: sun/part shade. Water: moderate. USDA Z4.