After a week of growing, a sunflower typically reaches a height of about 6 to 12 inches, depending on the variety and growing conditions. Factors such as sunlight, soil quality, and water availability can influence its growth rate. As the sunflower continues to grow, it may eventually reach heights of several feet. Regular care and optimal conditions will support its development.
You need to be growing the proper species. Not all of them will grow that tall. Look for "Giant" sunflower seeds.
Height after 8 weeks = height after week 4 + growth in week 5 + growth in week 6 + growth in week 7 + growth in week 8= 4 + 2 + 3.5 + 4.4 + 4.7 = 18.6 cm.This assumes that the sunflower was 4 cm tall after week 4, and that the last growth mentioned, of 4.7 cm, was duringweek 8.
Look at that tall sunflower!
It takes a lot longer than a week for a sunflower plant to reach maturity.
walmart
a sunflower is about 8-12 feet tallup to 8 feet tall
i think the fastest growing plants are Morning Glory and Sunflower ----- Bamboo is the fastest growing plant.
The tall yellow flower in the garden is a sunflower
The sunflower is very tall and its really long roots to absorb up the water.
8,75m
yes and they grow very tall
The Mammoth Russian Sunflower- it grows to about 12-15 feet tall