Perennial – New York Ironweed
New York Ironweed
Botanical name: vernonia noveboracensis
Beginner friendly?: moderate
Average size at maturity: 4-8 ft in height with a 3-4 ft spread
Hardy zone: zones 5-9
Growth rate: reaches fully mature size in first growing season
Foliage color: green
Flower color: purple
Bloom time: summer
Pruning instructions: deadhead withered blooms and foliage as needed
Propagation methods: propagate by seed sowing
Landscape use: flower gardens, container plant, pollinator gardens
Special features: attracts pollinators, deer resistant, drought tolerant, fragrant blooms
Light needs: 6 hours of sun per day
Watering instructions: allow the top 2-4 inches of soil to dry out between watering sessions
Fertilizing instructions : use a balanced liquid fertilizer once a month throughout the spring, summer, and fall months
Best time to plant: spring, fall
Best type of soil: loam, sand
Companion plants: coneflower, aster, joe-pye weed
Toxicity level: non-toxic for humans and pets
Invasive species: no


