"You don't need more faith. You need to use what faith you have. 'If you have faith as small as a mustard seed...'"
The faith that we are given works best when used. (I know, duh!)
I need to plant that mustard seed! It will grow into a tree that the birds can perch in!
Not as many people farm in America any more, so I think we loose a bit of the analogies in the parables.
We take seeds and plant them in the ground. Many of them are small... very small. They grow into a plant which produces seeds!
Basil is a pretty small little seed.