Growth stages of sunflower sunflower in r2 growth stage the creation of a standardized growth stage scheme into vegetative and reproductive stages gives producers scientists and the industry a common basis to discuss plant development photos associated with each of the stages can be found in our photo library or by clicking on the link within each stage. If you were to watch sunflowers during this bud stage you would see the flowers follow the sun they start the day facing the east as the sun rises in a process known as heliotropism the developing bud will follow the sun from east to west. Description of sunflower growth stages the total time required for development of a sunflower plant and the time between the various stages of development depends on the genetic background of the plant and the growing environment. Description of sunflower growth stages the total time required for development of a sunflower plant and the time between the various stages of development depends on the genetic background of the plant and the growing environment when determining the growth stage of a sunflower field the average development of a large number of plants. Reproductive growth nine distinct stages comprise the reproductive growth period of the sunflower plant the first several of these phases comprise flower growth and development but the main portion of this growth stage is devoted to the blossoming and pollination of the flower structures
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