Bog Rosemary Blue Lagoon A low growing shrub, Andromeda polifolia Blue Lagoon is an attractive evergreen with grey-blue foliage similar to common Rosemary, albeit inedible. Related to our common heather, Bog Rosemary carries clusters of beautiful pale pink, bell-shaped flowers in early Summer and is very attractive to bees and butterflies.Site: Full sun or part shadeSoil: Moist peaty, soils. Tolerates very wet soilPosition: Full sun, tolerates part shadeSeason of Interest: Evergreen grey-blue foliage, flower clusters in SummerHardiness: Fully hardyHeight: 1.5ft (45cm) Spread: 2ft (60cm)