Picking yellow bedstraw.
It's abundant on dry meadows.
And along dry roadsides, locally. Yellow bedstraw (Galium verum), that is.
Now, not all yellow bedstraws are equal. The lighter yellow ones can be hybrids with lesser species, and some of those have no scent.
Those with the heavenly scent of honey are useful.
I have no idea if you can use the ones which don't have the scent, as I usually try to smell the flower before I pick lighter-colored flowerstalks.
It's easy to pick yellow bedstraw: cut the stalk with a knife about 10 cm above the ground. Only take 2-3 stalks from the larger clumps - there's lots more on the meadow. If there isn't, well, why are you picking there in the first place?
Sometimes you'll find single-flowerstalk plants. They're either not yet established properly (come back in a few years) or they're not growing where they should (and thus weaker than they could be). Either way, leave those single stalks where they are, growing stronger, making seeds.
I put my yellow bedstraws into the same jar as cleavers (Galium aparine); I've seen vegetable beds with enormous amounts of cleavers, but alas, those weren't in my garden (they were in fact quite a way off). My garden produces a handful of cleavers each year, and I let it go to seed so I get more of it. Easy pickings, cleavers is.