Sunflowers 2025

Growing Sunflowers:

Sunflowers have extensive root systems that help them easily utilize soil nutrients. Sunflowers prefer well-drained soils with a pH between 6.0 to 7.0, like clay loam and silty clay soils.

Sunlight: Sunflowers need at least 6-8 hours of direct sunlight daily. If they’re not getting enough light, they’ll elongate in search of more, resulting in weak, “leggy” stems.

Fertilizer: Once the second set of leaves have appeared, a slow-release all-purpose fertilizer can be applied directly to the plants to speed up growth and produce larger flowers. Sunflowers also can benefit from applying half the recommended nitrogen during planting and the second half later in the growing season, which is known as a split application.

Water: Maintain consistently moist soil, but avoid overwatering, as this can lead to root rot.
Nutrients: Use a balanced fertilizer, especially one with nitrogen, to support healthy growth. Nitrogen is particularly important for stem and leaf development.

Support and Staking:
Staking: Tall sunflowers or those in windy areas may benefit from staking to prevent them from falling over. Use stakes and gently tie the stems with twine or fabric to the stakes.

Gentle Swaying: A slight breeze or a fan on low can help strengthen stems by encouraging them to develop thicker cell walls in response to the stress.

Addressing “Leggy” Seedlings:
Bury Deeper: If seedlings are leggy (elongated and weak), you can bury them deeper into the soil when transplanting, ensuring only the topmost leaves are exposed.

Partial Burial: Alternatively, you can partially bury the stems of seedlings in the soil.

Harvest:Most sunflower varieties bloom 10-13 weeks after planting, with the blooms lasting for 3-4 weeks. Home gardeners can harvest their sunflowers in the early morning to use for floral arrangements. Handle flowers carefully, and they can last in water at room temperature for up to a week. To harvest the seeds, you can either cut the flower heads off and let them dry and then remove the seeds or let them dry on the stem.

I decided to try burying leggy transplants that I grew from seeds (planted May 26.). I grew these seeds in jiffy pots, they put out a lot of bottom roots. Sunflower seeds is a mix can Sunny. I transplanted two jiffy potted sunflowers seeds into each of the three tall trash can potted tomato plants from Walmart.

tomato Husky cherry 001 and Sunny sunflowers w arrows
tomato Husky cherry 001 and Sunny sunflowers w arrows

Roma Tomato and Sunny sunflowers 002 w arrows
Roma Tomato and Sunny sunflowers 002 w arrows
tomato Husky cherry 002 and Sunny sunflowers w arrows
tomato Husky cherry 002 and Sunny sunflowers w arrows
ebay peach sunflower blurb image
ebay peach sunflower 25 seeds. May 20 sowed 1 seed each into 10 Jiffy pots.  Placed the 10 Jiffy pots in long clear storage box.  Set this box onto back deck for germination.
ebay dwarf sunspot sunflowers
ebay dwarf sunspot sunflowers 25 seeds. May 20 sowed 1 seed each into 10 Jiffy pots.  Placed the 10 Jiffy pots in long clear storage box.  Set this box onto back deck for germination.
Dwarf Sunspot sunflowers are relatively low-maintenance plants that thrive with full sun and regular watering. They prefer well-drained soil and don’t typically require excessive fertilization. Deadhead such Sunflowers and Dwarf Sunspot to encourage continued blooming throughout the season.

Dwarf Sunspot Sunflower is a shorter variety that works great in containers, beds, and borders. The plants will do better if planted with composted manure and slow-release fertilizer. These vigorous plants will mature quickly in about 9 weeks from planting.

ebay sunflower mix 125 seeds
ebay sunflower mix 125 seeds. May 20 sowed 1 seed each (selected larger white and striped seeds) into 10 Jiffy pots.  Placed the 10 Jiffy pots in long clear storage box.  Set this box onto back deck for germination.