Plant Profile

Suntastic Yellow Sunflowers (Helianthus annuus Suntastic Yellow) are a vibrant and cheerful variety of sunflowers prized for their bright yellow blooms and compact size. These sunflowers typically grow to a height of 12-24 inches, with flower heads that measure about 5 inches in diameter. The petals are a sunny shade of yellow, radiating out from a dark center that attracts pollinators such as bees and butterflies. This plant blooms up to three times in a season with as many as 20 flowers on a plant, making this a great choice for borders or to use as cut flowers. Pollinators love these sunflowers, and they look great in containers, too.

Soil pH

Suntastic Yellow Sunflowers thrive in well-draining soil with a slightly acidic to neutral pH range between 6.0 to 7.5. They can tolerate a range of soil types, including loamy and sandy soils, as long as the soil is fertile and amended with organic matter.

Sun Requirements

As sun-loving plants, Suntastic Yellow Sunflowers require full sun to thrive. Plant them in an area that receives at least 6 to 8 hours of direct sunlight per day for optimal growth and flowering. Insufficient sunlight may result in reduced growth and fewer blooms.

Watering Requirements

While Suntastic Yellow Sunflowers are relatively drought-tolerant once established, consistent watering is essential, especially during the early stages of growth and during hot, dry periods. Water deeply and evenly, ensuring the soil is consistently moist but not waterlogged. Allow the soil to dry slightly between waterings to prevent root rot. Applying a layer of mulch around the base of the plants can help retain moisture and regulate soil temperature.

Best Plant Hardiness Zones

Suntastic Yellow Sunflowers are well-suited for planting in USDA hardiness zones 3-9. These zones provide the ideal climate conditions for sunflowers, with warm Summers and sufficient growing seasons. In these zones, Suntastic Yellow Sunflowers can thrive and produce an abundance of bright blooms throughout the Summer months.

Additional Tips

Deadhead spent flowers: Regularly remove faded or spent flowers to encourage continuous blooming and prolong the flowering period.

Harvest fresh flowers: Suntastic Yellow Sunflowers are especially popular as cut flowers. Grow them in a row or in borders with other flowers suited for cut-flower arrangements.

Fertilize sparingly: Suntastic Yellow Sunflowers do not require heavy fertilization but can benefit from a balanced fertilizer applied during the growing season to promote healthy growth and vibrant blooms.

 
With their bright yellow blooms and compact growth habit, Suntastic Yellow Sunflowers bring a touch of sunshine to gardens, containers, and landscapes. With proper care and attention to their soil, sun, and watering requirements, these sunflowers can thrive and add a cheerful pop of color to any space.