Sunflower (Helianthus annuus) (5)
One of the most fascinating aspects of growing sunflowers is to observe the flowers turning with the movement of the sun, their 'faces' held obliquely to the sun's rays [heliotropism].…
One of the most fascinating aspects of growing sunflowers is to observe the flowers turning with the movement of the sun, their 'faces' held obliquely to the sun's rays [heliotropism].…