no i am growing one now and its been a week with no root
Sunflowers need about 1 to 2 square feet of space to grow effectively.
1 time a week
You can't.
1 centimetre
You cannot
1/8 of an inch
1/8 of an inch
You don't.
1 week
0.3cm (1/8 of an inch) x
1/8 of a inch
about 1 week