50 – 65 days. Pro Cut Series sunflower seeds grow some of summer's most astonishing, vigorous, and timeless blooms. Pro Cut Series sunflower seeds are hardy outdoor favorites for growing unique, vivid color in either a decorative planter or lining the back of the garden. Pro Cut Series seeds promise radiant, eye-catching 3 – 4” heads bursting in their signature orange, gold, red, sunburst, or mixed. Pro Cut Series sunflowers grow easily from seed and are known to thrive in gardens prone to heat, drought, and poor soil and mature in as early as 50 – 65 days! 500 Seeds.
Growing Pro Cut Series Sunflower Garden Seeds
- Taxonomy: Helianthus annuus
- Seed Type: Annual
- Sow Indoors or Outdoors: Sunflowers generally grow so hardy and vigorously that there is little reason to start seeds indoors. Sow directly after final frost in a sunny spot at the north end of the garden and shelter from strong winds. However, for early spring blooming, start Pro Cut Series seeds indoors 6 – 8 weeks prior. Seeds will take 7 – 14 days for germination. Early plants may need staking in addition to wind protection.
- Days to Maturity: 50 – 65 days
- Hardiness Zone: 2 – 10
- Planting Depth: Plant 2 – 3 seeds ½" deep
- Plant Spacing: 12"
- Growth Habit: 48 – 72” tall bushy upright with 12” spread and one 3 – 4” pollenless head
- Soil Preference: Average, loamy, well-drained
- Light Preference: Full sun
- Diseases/Pests/Troubleshooting: Plants are heat and drought tolerant, but susceptible to mold and mildew in poorly-drained soil. Adjust staking and wind protection as plants mature. Monitor regularly for aphids, but Pro Cut Series sunflowers have no serious pests or diseases.
- Color: Sunburst, Orange, Gold, Red, or Mix
- Amendments: Treated
Sunflowers generally grow so hardy and vigorous that there is little reason to start seeds indoors. Sow Pro Cut Series seeds directly after final frost in a sunny spot at the north end of the garden and shelter from strong winds. However, for early spring blooming, start Pro Cut Series seeds indoors 6 – 8 weeks prior. Seeds will take 7 – 14 days for germination. Early plants may need staking in addition to wind protection. For direct sowing, plant 2 – 3 Pro Cut sunflower seeds ½” deep and 12” apart in organic, rich, and well-drained soil in full sun. Plants are heat and drought tolerant, but susceptible to mold and powdery mildew in poorly-drained soil. Monitor regularly for aphids, but Pro Cut Series sunflowers have no serious pests or diseases. Adjust staking and wind protection as plants mature. Pro Cut Series sunflower seeds mature in as early as 50 – 65 days as 48 – 72” tall bushy uprights with a 12” spread and one 3 – 4” pollenless head circled in petals of sunburst, orange, gold, red, and mixed.
A common misconception about flowering Helianthus annuus heads is that they track the sun across the sky. Immature sunflower buds will exhibit this tendency, while mature heads are fixed throughout the day, generally facing an eastern direction. The leaves and foliage, however, will lean towards the sun for full light advantage.