big yellow sunflowers in the field against the blue sky. agricultural plants closeup. summer flowers the family asteraceae

against agricultural agriculture agronomy asteraceae asterales big bipartite bloom blossom blue botany closeup crop eukaryotes family field figment flower flowers fruition fruits grade harvest helianthus leaves meadow nature nectar oil petals plant plants pollen raw ripe season seeds sky stems summer sun sunflower sunflowers the variety yellow