How long does it take from start to finish?

from seed anywhere from 3 months to 6 depends on strain temp lighting and skill. It also depends on how big of a plant you want.

Depends. From seed or from clones. Are you going to let the plant mature naturally outdoors? If grown indoors you can control the lighting which means you can play god.

so true,
give it lots of fluorescent light
and organtic ferts
and it'll go very quick

__________________
I do not grow or smoke marijuana. All statements I have made, or will make, are purely educational.

3 to 6 is about right, you can buy some buds off nirvana and what not that will grow a bit faster happy growing!

__________________
if it comes in a pill it prolly kills if it comes from the ground damn straight its safe and sound