Harvest Moon: Back To Nature Secrets

These are all of the gameplay features that the game itself never directly
tells you about, or doesn't give you much detail about.

Special Crops

 There are three special crops: Strawberries, Pumpkins, and Spinach.  These
crops are growable in Spring, Summer, and Fall, respectively, and are
accessed by shipping 101 or more of each other type of crop for the season
first (so for Strawberries, you would have to ship 101 Turnips, 101
Potatoes, 101 Cucumbers, and 101 Cabbages minimum to unlock them).  These
crops are all pretty average in value, but all are required in at least
one recipe each.

Power Berries

 Power Berries increase your stamina.  They're critical, to say the least,
once your farm starts to take off, since 100 stamina is nowhere near
enough to tend to everything on a full farm.  Each berry gives you 10
more stamina, and restores your stamina entirely when you first get them.
Below is the list of how to get all 10.

* Given to you by the tree on Mother Hill if you choose to not cut it down
* Dug up inside the mine
* Caught in the ocean during Spring or Winter
* Given to you by the Goddess for 5 crops
* Prize at the horse races
* Won from the swimming contest
* Outside of the winter mine
* Dug up inside the winter mine
* Bought off of TV Shopping
* Given to you by Anna if you have 91+ flowers planted, and you let her
pick as many as she likes; she'll drop by after noon, so you'll have to
enter and leave your house around that time for her to show up

 And here is how to get the Mystic Berry, which reduces the rate at which
fatigue rises.

* Given to you by Kappa on any sunny day after noon; throw 3 Cucumbers at
him (NOTE: If you're wondering, there's a good reason for why you have to
throw cucumbers.  Kappa are a type of water sprite in Japanese mythology
that will leave you in peace if you throw a cucumber with your name carved
into it at them.)  You can also throw Large Fish at him.

 See below for a rough map of where to throw the Cucumbers.  Basically,
anywhere on the little peninsula will do, as long as you're facing out at
the lake, and not towards the mine.

Key:
S = Tree stump
T = Trees above the path
* = Where to stand
> = Direction to face

     /
    /
   *\ >
 S */ >
   TTT
 _____
/
\_____

The Goddess of the Waterfall

 You can summon this goddess by tossing crops into her pond (any will do).
If you toss 5 crops into it, she'll give you a Power Berry.  Toss in 5
more, and you'll get a special event with the girl that has the most
affection for you at the hot springs, that will boost her affection for
you.  Donate 10 more, and the goddess will give you some special lumber,
which you give to Gotz automatically and get 1000G.  You can only summon
the Goddess on sunny non-festival days, and only before 6:00PM.