This article tries to explain all about growing crops.
In Creativerse you can grow crops and cook food since update R22 in September 2015. You can feed all types of cooked food to your Pets (Creatures that you have tamed), only after that you can harvest from them. However food can also be consumed to give your player-character specific buffs that will help with the character's survival in Creativerse.
Obtaining Seeds Edit
Wheat seeds will occasionally be obtained when plucking Tallgrass or Savannah Tallgrass. All other seeds can currently only be gained by processing crops you have found into seeds in the Processor - 1 crop will be processed into 2 seeds each.
Tilling Land Edit
For tilling you will need a Plow. The crafting recipe to craft a Plow will be unlocked by crafting/taking an Obsidian Mining Cell. Crafting the Plow (with 2 Stone Rods, 2 Obsidian (ore) and 2 (blocks of) Stone) is one of the requirements to unlock the crafting recipe for the Cooking Station.
To use it you have to equip the Plow by right-clicking on it which will make it go into the tool-slot next to your character's portrait. By pressing TAB you can cycle between weapon, mining cell and tool. Choosing the plow will "ready" it like it was a weapon, and you can use it on a tillable block by left-clicking and holding down the left mouse-button for 4 seconds.
Currently you can till blocks of Dirt, Mud and/or green Grass (not Dead Grass nor Savannah Grass though). If a block is tillable, then a cyan-blue "X" will show up over that block. You can place these blocks yourself and then till them, they don't have to be "naturally" generated blocks.
Even if you aim at the side or underside of a block, the Plow will always plough the upper side of the block. Tilled land also can't be rotated to the side or upside down by usual means. It can be rotated sideways though to make it easier for you to perceive where each block ends and then next one starts. Also the direction of the tilled land is the same direction of the player tilling, so if you till when you face direction N-S, the result is a tilled land in direction N-S, this can be applied to make different tilled patterns
You can find or place such plowable blocks in different biomes. Crops do not need light to grow in Creativerse, and you can grow them sucessfully underground. Still the Lava layer is unsuitable, because it is too hot there. "Cool" biomes with a bit of snow or ice (for example ordinary Canyons are okay, but if there's ice or snow all around or the biomes are just too cold, seeds won't grow; that also holds true for artificial biomes created too high up (over an altitude of 150).
Swamplands and artificial biomes with too much Bog Water won't do either. Sometimes you cannot grow crops on specific surface areas where seeds will stay fallow for no apparent reason; this most often happens in Forests. In this case you can try growing crops higher up or further down on acres created by yourself from Dirt or Grass (or Mud if you wish so) with some Water underneath or next to it.
The Plow will lose a little bit of durability (or power) with every usage until it will fall apart. One plow can till 100 blocks of land before it breaks.
The most common layout for tilling land :
(T = tilled land, W = water)
Alternatively you can place Water (or Mineral Water) directly under blocks of Dirt or Grass, which enables you to plant more seeds. In this way you can build acres in any creative shape you like. The same goes for building acres from blocks of Dirt or Grass "floating" directly over the surface of a lake or the Ocean.
Planting Seeds Edit
To plant Seeds, put them into any quick-slot, select that and put the seeds onto the tilled land with right-click. Only one seed of a stack will then be planted each. Take care not to stand directly on a block of tilled land when trying to plant a seed on it.
You should plant Seeds on tilled land as quickly as possible, otherwise idle tilled land is going to turn to Dirt (even former Mud will do that) after a short while, and then perhaps into green Grass if another block of Grass is close...
Tilled land can be re-used (seemingly unlimited times) if you just plant new Seeds quickly enough right after harvesting Crops that you have grown there before.
If you want to keep the tilled land from changing into Dirt but still have to process Crops into Seeds, you can place torches on the acres or any other blocks/items after tilling or harvesting from it.
Since update R46 (Galactic) it is now no longer possible to re-use the same Seeds repeatedly by using Block Phasers to re-sow them automatically again and again right after harvesting the grown Crops.
Watering Seeds Edit
Growing Seeds will start to sparkle soon after being placed (ripe crops will sparkle even stronger). But if no moisture is near, the Seeds will stay "Fallow" (written in red letters at the bottom of your screen over the quick-slots if you look at the seeds) and won't grow.
Water, Bog Water or Mineral Water can be used to water seeds. The moisture needs to be placed directly next to the block of tilled land, at least corner touching corner. This block of moisture for Seeds can also be one block under/below or above the tilled land.
Water needs at least an Obsidian Mining Cell to be scooped, for Mineral Water a Diamond Mining Cell is needed. So for beginners it might be a good idea to till land right next to water - best to build a acreage one block above the water (starting from the shore is the easiest).
Fertilizing Seeds Edit
It is not necessary to use fertilizer to make Crops grow. Fertilizing Seeds or young Crops will only speed up their growth. In general Wheat grows fastest, Horned Melons grow the slowest of all crops.
Wheat needs approx. 50 minutes (real-life-time) to grow from seeds into ripe plants, even if you're offline. Lettuce needs about 60 minutes, Turnips not much longer (ca. 61 minutes), Horned Melons need ca. 90 minutes until they're ripe.
Currently only Pigsy Droppings can be used as fertilizer, and these are only available from Pigsy Pets, so you need to tame Pigsies and harvest them to get fertilizer. Fertilizer can be used (put into a quickslot, select and then right-click) directly on the seeds you have planted to make them grow into sprouts immediately.
Fertilizer can also be used on Seedlings (first stage of growth) to spurt their growth into sprouts, but after this growth stage Crops will no longer accept fertilizer. So don't wait too long with fertilizing your Crops if you want to spurt their growth. Seeds will grow into plants after being planted even if you go offline.
Light "Level" Edit
In Creativerse, Crops do not need light to grow. You can grow plants underground or in buildings in complete darkness too if you like. Just make sure that Water or Mineral Water is adjacent to each block of tilled land.
Harvesting Crops Edit
You can harvest crops as soon as they are "Ripe" (You can see the description at the bottom of your screen above the quickslots when looking at the crops.) To harvest, pull the Crops with left-click like you take/mine all other blocks in Creativerse.
You might want to de-equip your Power Cell first so you won't accidentally also pull the tilled land too.
If you wait longer (ca. 24 hours of real-life-time), then the crops will turn into "Grown" crops, and will give a little less harvest than during their optimal "ripe"-stage.
As mentioned above, Wheat needs approx. 50 minutes (real-life-time) to grow from seeds into ripe plants, even if you're offline. Lettuce needs about 60 minutes, Turnips not much longer (ca. 61 minutes), Horned Melons need ca. 90 minutes until they're ripe.
Fallow Seeds Edit
Seeds will stay "Fallow" if they cannot grow into crops at that place, such as when water is not touching the block of tilled land that you have planted the seeds on.
Seeds will also stay fallow on the Lava layer, as it is seemingly too hot for them to grow into plants, Seeds also won't grow in cold, snowy and icy environments, neither on tilled land that is too high up in the sky (over 150 blocks, type // to learn about your exact coordinates), but seeds will usually stay fallow in these environments even when you moisture them with Mineral Water that won't freeze so easily. Heating up the tilled land in cold or high environment (like by placing hardened lava or the like) will not always help.
Fallow Seeds cannot be fertilized, so don't worry about wasting fertilizer.
As mentioned, Crops do not need illumination, therefore they can also grow just fine underground on tilled land with moisture nearby, even on the Corruption layer.
WARNING: if growth conditions change while crops are still growing (temperature increase or drop, liquid nearby is removed/freezes, too much bog water is placed nearby, etc.), then the crops will transform into fallow seeds. Only if crops have already reached their "grown" stage (or even "ripe"), they will stay just as they are until players harvest them, even if soil and water are removed.
Every 60 seconds the game will check if the requirements for growing seeds are (still) met. This counter starts as soon as the seed is planted (tested as of update R30 with Horned Melon seeds). So if growth requirements are changed, Crops that have not reached the "ripe" or "grown" stage might at first not react for up to one minute and then suddenly revert back into - fallow - seeds.
Other types of "Farming" Edit
You can also grow Beeswax from Queen Bees if you place them on blocks of Wood, however biomes and specific areas must also be chosen wisely. Like Seeds, Queen Bees too will stay fallow when placed in areas that are too hot, too cold or too high up.
Additionally to all of that that you can currently grow 3 kinds of trees from Saplings: Elderwood Saplings, Cragwood Saplings and Ashenwood Saplings. Please note that tree Saplings will only grow well on few spots and Biomes, like in Forests or Woodlands; but even there some areas might not be to their liking, so that Saplings will stay "fallow". Elderwood Saplings can grow well in Tundras, other Saplings won't. Saplings will need 15-16 RL hours to grow, fertilizing with Pigsy Droppings will only shorten this time very little, at about 15 minutes.
Tree Saplings can only grow successfully on blocks of Dirt or green Grass (and Elderwood Saplings on Snow Caps too), and there has to be moisture somewhere nearby (not necessarily directly adjacent though), preferably Water or Mineral Water. 2x2 or more tree Saplings can be placed together and will sometimes grow into thicker trees (up to 4x2 max. up until now), sometimes into 2 trees on top of each other.
Also many Flowers will continually spawn on blocks of Leaves ingame over time, so you can build "farms" from leaves for them. This works well with Red Flowers on Ashenwood Leaves, Blue Flowers on Elderwood Leaves, Yellow Flowers on Cragwood Leaves and Wildwood Flowers on Wildwood Leaves or Dark Wildwood Leaves. Unfortunately it is much easier to multiply Flowers by placing them on the ground and picking them up again which will sometimes yield an extra Flower block as additional harvest...
Since update R2 Red Mushrooms can "regrow" (spawn over time), however they will only spawn (in complete darkness in very small numbers. They will most often spawn in areas where all original occuring Red Mushrooms have been plucked. They do not seem to grow on player-made artificial biomes at all.
In a way one could say that Ice (for slopes or even "railways" built with Fans) can be "farmed" from Water, as well as Hardened Lava from liquid Lava. When using this term, then even Coal and somehow Diamond Ore can be "farmed" (from Tar).