Depends on the plant to, i reckon. My big bud plants took almost 3 weeks to sprout roots, but when it did... ohh boy.

I have another strain (unknown but really sweet) what i just put in the bubble cloner and it only took about 3-4 days for the first roots to spring up.

I use Olivia's when i first snip em, then Botanicare's Power Cloner liquid in the water. This stuff works wonders... But then again, im a huge fan of Botanicare's product line.. a lil expensive, but always high quality. works in small doses, and if used properly (its pretty powerful) has wonderful results.

Reguards,
Sir. Pocket of Dogg Snogging