Mountainside Crater Lake Hybrid Spring Phlox

Mountainside® 'Crater Lake' is a low hybrid spring phlox with cool indigo-purple flowers and bright green foliage. Proven Winners lists this exact selection at 4–6 inches tall and 24–28 inches wide, with a spreading habit and USDA hardiness zones 4–8. ### Spring color and placement Flowers cover the compressed groundcover in early spring. The site lists blue and purple flower colors, fragrance, salt tolerance, and attraction to bees and butterflies. Its restrained spread suits edging, borders, mass plantings and containers where a low spring carpet is wanted. The plant page notes that this variety is no longer sold by Proven Winners, but it remains an identified named selection and the care information is useful for existing plants. ## Maintenance Choose full sun for best performance. Provide gritty, neutral soil with good drainage; the page lists average water needs. Avoid keeping the crown wet through winter. [Proven Winners plant detail](https://serv7.provenwinners.com/plants/phlox/mountainside-crater-lake-hybrid-spring-phlox-phlox-hybrid)