Despite being damaged by hail, the flower continued to grow. With the help of the fire department the flower could be measured. The giant sunflower is grown by Hans-Peter Schiffer who was the previous record holder as well.
How to grow such a large sunflowers?
- Sow many and select the best seedlings
- Use the best seeds of the previous year
- Perfect hydration (ideally by supply of groundwater)
- Good support
- Fertilizer based on potato residu mix
For most areas sunflowers can be sown until june.