Q.How Tall Should A Red ‘black Magic’ Sunflower Grow ?
How tall should my red sunflower grow ? I read online that they only grow to an average 1.2 MTRS but mine is way over 2 MTRS as you can see in the pic.
Certified GKH Gardening Expert
This happens when they are shaded for a portion of the day. They will stretch in response to lower light, seeking brighter areas.
Generally, max height describes the height of a plant in perfect conditions, but does not account for shade, crowding, soils lacking in nutrients, or other factors that can affect height.
Generally, any drastic variation in height means that their environment is a little less than ideal, but does not mean that they are suffering. They, simply, adapt to their surroundings as best as they can.
This article will offer more information on the care of sunflowers:
https://www.gardeningknowhow.com/ornamental/flowers/sunflower/growing-sunflowers-in-your-garden.htm