Post by lilolpeapicker on Jul 16, 2019 9:24:28 GMT -5
In my front yard the sunflowers are are facing away from the rest of the garden. My house sits looking southwest. The sun comes up northeast of the flowers. So I know they start the day doing just that. But throughout the day they do not follow the sun as I would expect.
Now the sun is higher(northerly) and does go over the front part of the house some coming in the front window. Then it is west of the house so why aren't the flowers moving westward?
This has happened with other flowers in that position at the edge of the property.
Anyway to fix this? It does not happened to the flowers not exposed to that morning sun.
Have a great gardening day! hoe, hoe, hoe Pea Upstate NY, zone 5
They can't turn their heads because they have arthritis in their necks Or more seriously,
Sunflowers turn their faces toward the sun as they track it across the sky -- an activity known as heliotropism, or solar tracking. Special motor cells at the bases of the flower buds shrink or enlarge as they absorb water, which moves their faces toward the sun. This is the same way that many other flowers track the sun.
Once a sunflower is pollinated, it ceases solar tracking. This supports the idea that the reason sunflowers turn their flowers toward the sun is for the warmth, which attracts pollinating insects. Another possibility is that the sunlight aids the development of pollen. It's a different type of sun tracking than their leaves and the foliage of many other plants perform. Leaves track the sun to absorb light for photosynthesis.