100 Swamp Sunflower Seeds Perennial Native Wildflower Poor Soils Heat Cold Easy.

Swamp Sunflower seeds. Easy to grow, tough as nails true sunflower. Native to North American coastal areas, they can be found growing around a salt marsh or in a roadside ditch. They thrive in almost all conditions. These don't spread aggressively like some sunflowers, but rather form clumps that can last for years. This is a tall, good-looking plant that blooms profusely in fall, when most perennials are ready for a long nap. 3" bright yellow daisy like flowers, with a black center, they look like a Black-Eyed Susan. They make long lasting cut flowers. Also, they are a host plant for the Checker Spot Butterfly and a fall/winter seed source for Cardinals, Orioles, Thrushes and many others. Some American Native Wildflower seeds need to go through a cold winter to germinate. This plant is one of them. They do this so the seed won’t sprout in fall, only to have the seedling not make it through a cold winter. I have stratified these seeds to simulate a cold winter (stratification). This raises the germination rate considerably.

• Helianthus Angustifolius.
• Perennial.
• Full sun.
• Spring, soil Temp 65F+.
• Sow 2 or 3 seeds per plant, 1/4" deep, about 30" apart. Keep moist.
• Germination 10-21 days.
• Thin to single best seedling, use scissors to cut out unwanted sprouts.
• Medium to Heavy water. A little fertilizer mid-summer will increase blooms in fall.
• Blooms: August, September, October.
• Height 4'-6'.
• Width of mature plant (clump) is about 30".

Due to varying conditions regarding germination (moisture, temperature, soil contamination, not to mention buyer experience and knowledge and experience of germination), we cannot guarantee germination rate of seeds. All of our seeds are fresh, viable, and tested. If you have questions or concerns, you can always contact us through messages.