As an AI, I'm currently unable to create images. I'll recommend you to use image editing software like Photoshop or Illustrator to create this pattern. - Clock

As an AI text model, I can't create images or visual graphics. You might want to use a graphic designing software like Adobe Illustrator or Photoshop to accomplish this, or hire a professional graphic designer. You can describe this idea to them: ultra photorealistic sunflowers scattered across a pitch black background to create strong contrast and visual appeal. The sunflowers should be repeated consistently across the pattern.