Description: Flax is possibly the second- or third-most grown plant in Blockheads (I think). It will grow in almost any climate, and produced both flax seeds and flax.
Grows Best: anywhere on BlockEarth
Animal(s) Spawned: None
Seed Produced: Flax seed(uses: planting, eating, oil); Flax (uses: linen, string)
Flax is, in a way, the "pine tree" of plants. By that I mean that flax grows well in any climate, and it is not very difficult to find because of that. Flax, when planted, is a small green plant that gives you one flax seed and/or perhaps some flax. It grows seeds on top of it that, when chopped down, will produce anywhere from 2-6 flax seeds, I think. It's been a while since I've farmed flax, so bear with me. The top part of flax, that is brown, drops the seeds when cut down. The bottom part, the green part, drops flax and one flax seed. Flax seeds can also be crafted into oil.
The bigger the flax itself (the green part on the bottom) gets, the more seeds will be produced, and the more flax you will get if you chop the flax block (not the seeds). Generally, the best idea is to wait until you have gotten 6 to 9 harvests of the seeds on top before chopping the green flax part.
CARROTS
Description: Mainly used to spawn donkeys, carrots are probably the most common plant in the Blockheads.
Grows Best: equator
Animal(s) Spawned: donkey
Seed Produced: carrot (uses: planting, eating, spawning donkeys)
The one and only plant to spawn DONKEYS! Carrots are most likely the most planted, farmed, and eaten food in all of the Blockheads. You'll find carrots generally near equators, and donkeys are likely to be nearby. Many people have made donkey subways, donkey "air-ways", and donkey tunnels (to ride donkeys through mountains) in their worlds.
CHILIES
Description: The food of warmth, chilies are the best food to bring to the pole (but the hardest to farm).
Grows Best: equator
Animal(s) Spawned: none
Seed Produced: chili (uses: planting, eating, warmth)
Chilies are what I like to call the "Food of Warmth". If you don't have a fur coat or the North Pole hat of warmth, it's a good idea to bring with you about a stack of chilies. However, don't try to plant them aboveground near a pole, because they don't grow well near poles due to the cold. And campfires won't help because they'll just burn the chilies. But look out when eating chilies! Eating too much will cause your blockhead to get hurt from burning!
CORN
Description: There isn't really much to say about corn. It's basically just a food.
Grows Best: equator
Animal(s) Spawned: none
Seed Produced: corn (uses: eating, planting,
As I have previously said. There's nothing exceptional about corn. Although I'd recommend having about a stack of it on hand just in case. And because I like having at least 99 of each food. Corn is something good to plant for just food, since that's all it does. It doesn't change your temperature, it doesn't produce air, and it doesn't spawn animals. And apparently, ears of corn don't help you hear better!
KELP
Description: Planning on heading to the water depths of an ocean? Or maybe you want to head to the top of the world and beyond, to the un-breathable outer atmospheric layer? Then kelp is the food to bring, providing half a bar of air when eaten! Be sure to stock up before heading off on your daring adventure!
Grows Best: underwater, and it's best of that water doesn't freeze regularly
Animal(s) Spawned: fish, sharks (conditions: 10 blocks deep of water, fish, kelp)
Seed: kelp (uses: eating, planting, breath)
Kelp is a great food to bring when you're going to need air! It also grows really easily, but you have to watch out for fish, which will stop it from growing and eventually eat it, and if your farm is deep enough, look out for sharks too!
SUNFLOWERS
Description: Not very filling, but can be made into oil at the press, this plant is not one to grow if you need food (unless it's all you have).
Grows Best: Equator
Animal(s) Spawned: none
Seed: sunflower seed(uses: eating, planting, oil)
Sunflowers barely fill up a blockhead, (they fill up about as much as a flax seed,) but since they can't be grown for other things, like flax can be, they're best grown if you need oil.