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PlantSnap
Plant Care
The mississippi sunflower
(Helianthus praetermissus)
Also Known As
The mississippi sunflower, Prairiesun, Sunflower
About This Plant
Helianthus praetermissus is a species of sunflower native to the central United States. It is a perennial herbaceous plant that can grow up to 6 feet (1.8 meters) tall and 3 feet (0.9 meters) wide. The leaves are alternate, simple, and ovate to lanceolate in shape. The flowers are bright yellow and have a diameter of 2 to 3 inches (5 to 7.6 cm).
Plant Care Instructions
Outdoor Size Range
Height: 4-6 feet (1.2-1.8 meters), Width: 2-3 feet (0.6-0.9 meters)
Light Requirements
Prairie sunflowers require full sun to thrive. They need at least 6 hours of direct sunlight per day.
Humidity Needs
Prairie sunflowers do not have any specific humidity requirements.
Fertilizing Schedule
Prairie sunflowers do not require fertilizer. However, adding compost or organic matter to the soil can improve their growth.
Pruning Guidelines
Prairie sunflowers do not require pruning.
Common Pests and Diseases
Prairie sunflowers are generally pest-free. However, they can be affected by rust and powdery mildew.
Indoor Size Range
Not suitable for indoor growth
Watering Schedule
Prairie sunflowers are drought-tolerant and do not require frequent watering. They should be watered deeply once a week during dry spells.
Temperature Range
Prairie sunflowers can tolerate a wide range of temperatures, from hot summers to cold winters. They are hardy in USDA zones 4-8.
Growing Season
Prairie sunflowers bloom from July to September.
Growing Difficulty Level
Prairie sunflowers are easy to grow and require minimal maintenance.
USDA Hardiness Zones
4-8
Did You Know?
The seeds of the prairie sunflower were used by Native Americans as a source of food and oil.
