Bolding mine.It's implied in the Wiki:
Foraging - Stardew Valley Wiki
Foraging is the skill associated with gathering wild resources found on the ground throughout Stardew Valley, and with chopping down Trees. Foraging skill also increases by harvesting crops grown from Wild Seeds.stardewvalleywiki.com
that Forage spawn and their locations are randomly chosen, however with all the posts here about similar game "RNG" from @BlaDe and others, I don't know if that's a random event based on a pre-randomized value derived from the Seed, or if it's randomized on the fly, either daily or weekly.
Based on many other things in the game, I'd bet it's actually Seed-based so hopefully someone has a great Foraging seed for you!
That said, I believe Fishing and getting the Tea Sapling recipe from Caroline at 2 will likely give you a higher return on investment than just Forage. Unless of course you're using that Forage for the Tea Sapling recipe at which point, kudos to you!
Thanks a TON BlaDe!!!Forage is seeded for the most part. There are a couple of "random" things in there, but you will mostly get the same results.
Here is a sheet I put together for seeded mines runs. The number of leeks shown are the number of leeks in the mountains and backwoods that are present on the 5th. (it also gives maximum luck if you sleep to the 5th without taking a step, and will have a spicy eel in the saloon trash)
Potential Mine50 Seeds
Overflow seeds Negative Seed,Positive Seed,Last 9 digits (enter first digit, then paste this value) -2147267686,Leeks: 3,2147699610,147699610 -2136199782,Leeks: 3,2158767514,158767514 -2127126162,Leeks: 3,2167841134,167841134 -2123299480,Leeks: 3,2171667816,171667816 -2114735916,Leeks: 3,2180231380docs.google.com