Automatic Reed Farm

This is my design for a Automatic reed farm, Its actually really simple.
So this is basically what it does:
You plant all your reeds in front of the pistons.
Then after you did that, you plant a reed in the little slot near the BUD switch.
(You plant the reed near the bud switch after all the others so the other ones can grow and then actually works)
So once the reeds by the pistons grow, then the one by the BUD switch should grow shortly after, then when it grows it triggers the BUD switch, which knocks over every reed that grew, then knocks it into a stream of water, then you go pick it up!
Super simple!
I dont think it works perfectly because some reeds might not grow how i want them to, but it still works for most of them!

P.S: This idea just kinda popped in my brain and so i made it sense i was bored, i didn't copy anyone or steal anyone's ideas :P