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sunflower seeds the writ temperature to grow it in is 19 to 25 Celsius because it isn't to hot or too cold.
it takes about 80 to 120 days (all summer) for a sunflower to grow.
It takes a lot longer than a week for a sunflower plant to reach maturity.
how cold?
Tulips need to go in the ground in the fall and need to be in for at least 12 weeks in really cold temps to start to grow. If you are planting them in a pot in soil and put them in the fridge for at least 12 weeks then take them out.
A sunflower can grow about 4.5 in. in two weeks.
cold temperature
1. is a sunflower hard to grow
a sunflower seed grows the fastest but sunflowers need a lot of light so if you leave it in the cold it would probably die
they usually grow any were you want them to grow
They grow
sunflower