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Photo LibraryGrowth Stages
Stage 3: R-5.5

This stage is the beginning of flowering. The stage can be divided into substages dependent upon the percent of the head area (disk flowers) that has completed or is in flowering. Ex. R-5.3 (30%), R-5.8 (80%) etc.

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R-5.5 Stage

Name: R-5.5 Stage
Description: Sunflower plant in R-5.5 stage
ID Name: SUN111308O
Credits: NDSU Ext. Bulletin 25
Size: 94K

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