Sunflower Flower Seeds Packet

$4.95

FREE SHIPPING on seeds when you order 5 packs or more
Sunflowers (Helianthus annuus) are among the most recognizable and cherished flowers, known for their bright yellow petals and towering stalks. Sunflowers are stunning, easy-to-grow plants that add height, color, and function to any garden. Whether cultivated for ornamental beauty, edible seeds, or pollinator attraction, they thrive in warm, sunny conditions.
Quick Seed Overview
  • Plant Type: Annual
  • Genus: Helianthus
  • Species: Annus
  • Plant Height/Width: 60-72"
  • Exposure: Full Sun
  • Difficulty: Easy
  • Attributes: Attract Pollinators
Satisfaction Guarantee

We stand by the quality of our flower seed packets! With high germination rates and vibrant blooms, your garden is sure to flourish. If you're not completely satisfied, we’ll replace or refund—guaranteed!

Why Shido Seeds Are the Best

Our flower and vegetable seeds are beautifully packaged little packets of magic. Guaranteed to turn your garden into the envy of the neighborhood. Get your hands dirty and let nature simply do its thing.

How to Plant Sunflowers from Seed

When to Plant Seeds

  • Outdoors (recommended): Sow seeds after the danger of frost has passed and soil temperature is at least 60°F.
  • Successive Planting: To extend bloom time, plant seeds every 2-3 weeks through mid-summer.

Seed Preparation

  • No special preparation is needed, but soaking seeds in water for a few hours before planting can speed up germination.

Sowing Seeds Outdoors

  1. Loosen the soil to a depth of 12 inches.
  2. Sow seeds 1 inch deep and 6-12 inches apart, depending on variety size.
  3. Water thoroughly and keep the soil moist until seedlings emerge (7-10 days).

Transplanting Seedlings

  • If started indoors, harden off seedlings before transplanting.
  • Space them according to the mature plant size (1-3 feet apart for large varieties).

Pro Tip

Sunflower seeds are ready for harvesting when the back of the flower head turns yellow to brown, and either the seeds appear plump and firm or the petals dry out and fall off. To harvest, cut the flower head with 6 inches of stem attached and hang it upside down in a dry, ventilated area. Once the head is fully dry, rub the seeds out by hand and store them in an airtight container in a cool, dry place.

Getting to know your Sunflowers

Sunflowers are annual plants that complete their lifecycle in one growing season. They can grow anywhere from 1 to 12 feet tall, depending on the variety. They have thick, sturdy stems that support their large flower heads. Leaves are broad and heart-shaped, with a rough texture. Sunflowers exhibit heliotropism, meaning young plants turn to face the sun. Sunflowers bloom in late summer and early fall. Seeds are typically harvested in late summer or early autumn when the flower heads mature.

What it's used for

1. Ornamental Gardening:

  • Sunflowers make a striking addition to gardens and landscapes.
  • They are commonly used as border plants or focal points in garden beds.

2. Edible Seeds & Oil Production:

  • Sunflower seeds are nutritious and edible, commonly roasted for snacking.
  • Seeds can be used for sunflower oil production, a popular cooking oil.
  • They are a great source of protein, fiber, and healthy fats.

3. Pollinator Attraction:

  • Sunflowers attract bees, butterflies, and other pollinators, enhancing biodiversity.

4. Livestock & Bird Feed:

  • Sunflower seeds are commonly used in bird feeders and livestock feed.

5. Soil Improvement & Phytoremediation:

  • Sunflowers have been used in phytoremediation to remove toxins from contaminated soil.
Growth Requirements

Light:

  • Sunflowers require full sun (at least 6-8 hours of direct sunlight daily).

Soil:

  • Prefer well-draining soil with moderate fertility.
  • Grow best in soil with a neutral to slightly acidic pH (6.0-7.5).

Watering:

  • Require regular watering during germination and early growth.
  • Once established, they are drought-tolerant but benefit from occasional deep watering.

Temperature & Climate:

  • Thrive in warm temperatures (70-85°F).
  • Sensitive to frost; plant after the last frost date.

Fertilization:

  • Apply a balanced fertilizer (10-10-10) at planting.
  • Avoid excessive nitrogen, which promotes foliage growth at the expense of flowers.
Maintenance

Mulching:

  • Apply mulch to retain moisture and suppress weeds.
  • Helps regulate soil temperature and prevent rapid drying.

Supporting Tall Varieties:

  • Large sunflowers may require staking or support to prevent bending.
  • Plant against a fence or use garden stakes for extra stability.

Deadheading & Pruning:

  • Deadhead spent flowers to encourage continuous blooming.
  • If growing for seeds, allow flower heads to mature naturally.

4. Protecting from Wildlife:

  • Birds and squirrels may eat developing seeds; cover heads with mesh bags if necessary.
Pests and Diseases

Pests:

  • Aphids: Cause leaf curling; use insecticidal soap.
  • Cutworms: Damage young stems; protect seedlings with collars.
  • Sunflower Moths: Lay eggs in flower heads, damaging seeds.

Diseases:

  • Powdery Mildew: White powdery coating on leaves; treat with fungicides.
  • Downy Mildew: Yellowing and wilting; improve air circulation.
  • Rust: Causes brown spots; remove infected leaves.

Feed Your Plants Like You Actually Know What You’re Doing

Your plants called—they're tired of your "just water and hope" approach. Give themverteRx, the premium plant food packed with vitamins and growth boosters. Stronger roots, lusher leaves, and fewer judgmental stares from your fiddle-leaf fig. Because even plants deserve proper nutrition (unlike your diet).


Pretty Pots for Pretty Plants

Your plants work hard to look good—shouldn’t their pots do the same? Choose from our gorgeous flower pots and let your greenery thrive in style. Because plain plastic is just rude.

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