Swamp Sunflower Care, Propagation, Watering & Growing Tips

Swamp sunflower is a perennial that can grow up to 8 feet tall or more with proper care. Its daisy-like flowers are also very showy. It thrives in acidic soil and can be grown in full sun or partial shade. Because it is so tall and beautiful, it is usually used as a houseplant or border plant in the backyard. The flowers of this species also tend to bloom in the fall and summer.

Common Name

Narrowleaf Sunflower or Swamp Sunflower
Plant Type
Perennials
Taxonomy
Scientific name
Helianthus angustifolius
Genus
Helianthus
Family
Asteraceae
Order
Asterales
Class
Dicotyledons

Swamp Sunflower Water Needs

Water requirements and watering times for Swamp Sunflower.
Water Needs
Average
Cups
Generally, Swamp Sunflower needs water once every 8 days in 1.8 cups.
1 Cup = 250 ml, so at least Swamp Sunflower needs about 0.45 L per 8 days.

Swamp Sunflower Temperature, Humidity, and Light

Ideal light, temperature & humidity needed for Swamp Sunflower to thrive.

Light Requirements

± 6 hours

Temperature

70°F to 78°F

Humidity Preference

High

Swamp Sunflower prefers High humidity levels, between 50% and 70%.

Swamp Sunflower Soil Types and Growing Media

Information about soil and suitable planting media for Swamp Sunflower.

Suitability in pots

7L

Swamp Sunflower plants require different pot sizes as they grow. Start with a small pot of 7L.

Soil type

clay loam sand
Soil Drainage
Moist but well-drainage

Soil PH

acid neutral

Swamp Sunflower Characteristics

All you need to know about the characteristics of the Swamp Sunflower plant.

Maximum Height

96 Inches or 3 meters

Spread

48 Inches or 2 meters

Color

Green
Bright Yellow

Characteristics

Cut Flowers Showy

Is Swamp Sunflower toxic to pets?

No

Garden Style

Coastal Garden Informal and Cottage Prairie and Meadow Patio And Containers

Swamp Sunflower Grow and Care

Find out information on how to propagate Swamp Sunflower, when it flowers, and how to care for it.

Maintenance

easy

Propagation Methods

seed stem cutting root division

Flowering season

summer autumn

Swamp Sunflower Native Region

Find out where the Swamp Sunflower plant originated.

Country

United States of America (the)
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