Perennial – Marsh Rattlesnake Master

Marsh Rattlesnake Master 

Botanical name: eryngium aquaticum 

Beginner friendly?: moderate 

Average size at maturity: 1-4 ft in height with a 3-4 ft in spread 

Hardy zone: zones 5-9 

Growth rate: reaches fully mature size in 1-3 growing seasons 

Foliage color: green 

Flower color: blue, purple, white 

Bloom time:  summer 

Pruning instructions: deadhead withered blooms and foliage as needed 

Propagation methods: propagate by seed sowing 

Landscape use: rain garden, wetland/bog gardens, pollinator garden

Special features: attracts pollinators, drought tolerant, deer resistant 

Light needs: at least 6 hours of sun per day 

Watering instructions: consistently wet soil 

Best time to plant: spring, summer 

Best type of soil:  chalky, loam 

Companion plants: switchgrass, coneflower, mountain mint

Toxicity level: non-toxic for humans and pets 

Invasive species: no