Cambridge Scarlet Bee Balm Monarda didyma ‘Cambridge Scarlet’ Description Blooms large, scarlet red flowers with arching petals. Fragrant green foliage. Bloom Period: July to AugustGrowth Habit: Upright and clumpingMature Height: 2’ to 3’ (60cm to 90 cm)Mature Spread: 1’ to 2’ (30cm to 60cm)Growth Rate: Moderate More Details Sun Exposure: Full sun to partial shadeCold Hardiness Zone: 4Helps to repels mosquitoesAttracts hummingbirds, butterflies and beesDeer and rabbit resistant