Harris Seeds Sunflower Rouge Royale F1 Seed

Yes, the Rouge Royale F1 is a pollen-free hybrid. This makes them an excellent choice for indoor floral arrangements, as they won't drop yellow dust on your tables or linens.

Given their 72-inch height and branching habit, these sunflowers are best suited for garden beds. If you choose to use containers, you will need very large, heavy-duty pots to support their size and prevent them from tipping over.

For optimal results, sow the seeds at a depth of 0.75 to 1.0 inch. Ensure your soil temperature is consistently between 70-75°F to encourage successful germination.

As a branching variety, these plants will produce multiple blooms throughout the season rather than a single terminal flower. Once they reach maturity at around 70 days, you can expect a steady supply of stems for cutting.

No, these seeds are provided untreated. You can sow them directly into the soil as soon as the ground has warmed up to the recommended temperature range.

Because these plants reach up to 6 feet tall, they can be susceptible to wind damage. It is wise to plant them in a sheltered location or provide staking early in the growing process to keep the dark, decorative stems upright.