Origin: US Native
Other Common Names:
Duration: Perennial
Bloom Time: July-August
Height: 4' to 6'
Spacing: 18” to 24”
Light: Full Sun to Part Shade
Soil Moisture: Medium
USDA Zone: 2a-10b
Germination: No pre-treatment needed. Sow seeds on soil surface at 70F and water.
Seeds Per Oz: 190000
Reaching up to five feet in height with good sized blossoms, this is the largest of all St. John’s Worts! The blooms are bright yellow and star-shaped. These wildflowers are quite showy, and the carefree plant is very easy to grow!