I saw this daylily at a local farm and I would like to plant it in my garden. I can't identify the variety.

Welcome to this wonderful community!! You're going to enjoy it here.
It's a lily, not a daylily. Looks super fragrant - is it? Plant it and enjoy it for years to come!

That is not a day lily. It is an oriental lily of some kind I think. It is a bulb. It will come up every year. There are many varieties so it may be hard to get an exact name.

Lily (Lilium 'Acoustic') Here is one I found that looks similar.
You can search more varieties by looking here
https://garden.org/plants/brow...

it's a lily not daylily, is that a marijuana plant in the back left of the pic?

looks like a vitex plant in the back left?

I grow vitex but it looked like the leaves where serrated in the pic.

My vitex has serrated leaves. Maybe they are not all the same

my Vitex agnus-castus don't

but it looks like Chastetree (Vitex negundo) does