- Choosing Sunflower Varieties | Single-Stem, Branching, Pollenless or "Regular"?
- Tall Sunflower Varieties | Comparison Chart (PDF)
- Video: ProCut® 'Orange Excel' | Excellent, first-to-market sunflowers + field performance
- Tall Sunflowers | Key Growing Information
- 3 Sunflower Succession Planting-Harvesting Programs for Maximum Quality & Yield
- Single-Stem Sunflower (Helianthus annuus) Production | Tech Sheet (PDF)
- Video: Sunflower Production | Planning, Spacing & Sequencing Tips
- Dwarf Sunflower Varieties | Comparison Chart (PDF)
- Dwarf Sunflowers | Key Growing Information
- Branching Sunflowers | Key Growing Information
- Video: 'Sonja' & 'Soraya' Branching Sunflowers
- Perennial Sunflowers | Key Growing Information
- 3 Easy, Reliable, Productive Cut Flowers: Sunflowers, Zinnias & Rudbeckia
- Cut-Flower Harvesting & Post-Harvest Care | Best Practices from Pros in the Slow Flower Community
- Cut-Flower Kit | Guide for Market Growers (PDF)
- Getting Started in Cut-Flowers | Top 15 Cuts
- Heat & Drought: How Flower Farmers Are Adapting to Changing & Challenging Climatic Conditions
- Just Add Flowers | An Introduction to Companion Planting for Vegetable & Herb Gardeners
- Pricing & Profitability for Flower-Farmers | Pointers from a Diversity of Pros
- Slow Flowers | Celebrating Fifth-Season Regional Design Elements
- Succession-Planting Flowers | Scheduling & Planning, Sowing Frequency, Recordkeeping & Recommendations
- Instructions for Growing Sunflower Shoots | Tech Sheet (PDF)
- American Flowers Week: Combining the Art of Floral Design & Couture
- Johnny's Planting & Harvesting Programs
- Johnny's Edible Flower Guide | Printable 4-pp Brochure (PDF)
Tall Sunflowers - Key Growing Information
SOWING: Direct seed (recommended) - After last frost, sow 1/2" deep. Transplant - Sow into 72 to 50-cell flats 2-3 weeks prior to planting out. Plants dislike root disturbance, but sowing indoors and then transplanting the first crop outdoors can be a successful way to get first-early sunflowers. Do not pinch plants. Pinched single-stem sunflowers will produce low-quality blooms or no blooms at all. Succession-sow every 1-2 weeks and/or plant multiple varieties with varied days to maturity for continuous harvest.
LIGHT PREFERENCE: Sun.
PLANT HEIGHT: Varies.
PLANT SPACING: 4-6".
HARDINESS ZONES: Annual.
HARVEST: Flowers can be harvested tight, when color first shows, or when almost completely open, depending on your market and preferred use. Dried - Flowers are completely open. Hang or use silica gel.
SOIL REQUIREMENTS: Light, well-drained soil. Excessive nitrogen may cause plants to grow too vigorously with abnormal flower shapes.
NOTES: Flower size and stem diameter are controlled by plant spacing, temperature, soil type, and day length. For early and late season production, select varieties that are day-length neutral or are noted as suitable for flowering under short days.
USES: Excellent cut flower or for gardens.