The sunflower (Helianthus annuus) is an annual plant that originated in Southeastern U.S. about 5000 years ago. It was used by the local natives in bread, medical ointments, dyes and body paints. Making it way to Mexico (trading between tribes) it was a valuable plant used by the Aztecs and Otomi of Mexico and the Incas of South America. In 1510 the Spanish explorers carried seeds back to Europe, and it became very popular across the continent as a food source and as an ornamental flower.
how long has archaebacteria been on earth? how long has archaebacteria been on earth?
I am from Wisconsin and there are many sunflower fields in the state. But I would guess that the mid-plain states are where most sunflowers are grown.
Sunflowers typically take about 80 to 120 days to mature from the time they are planted.
Sunflowers are native to North and South America; they've "always" been here.
they have been on the earth for along time
They have been on earth since 190 million years ago.
Sunflowers may not grow in a greenhouse because it requires constant sunlight and hence it may not grow
long time
for as long as it has had continents
A very long time.
i have been on this earth for 8 years
As long as the temperatures are above freezing, sunflowers can be grown anywhere in Australia. Many gardens, both flowering and vegetable, will incorporate the showy blooms. There is also a commercial demand for sunflower products in Australia, and because of that the Australian Sunflower Association was formed in 1976. Central Queensland is the central hub of the sunflower industry.