Demanding Saplings

Saplings require specific temperatures to grow. When a sapling is placed outside its compatible range, it can perish and turn into one of three dead bushes. A temperature far too high turns it into a vanilla dead bush, a temperature slightly off turns it into a dead sapling, and a temperature far too cold turns it into a frozen bush. The mod adds a thermometer that reads the temperature of the located biome, so a player can check whether a biome suits the tree they want to grow.

The mod uses Minecraft's existing biome temperature system and its height mechanic, so higher altitudes give lower values. A sapling placed at a temperature slightly outside its limit has a chance to grow, and that chance of dying increases the farther the temperature gets from the limit. In the overworld, saplings grow only there; in the Nether they turn into dead bushes, and in the End they turn into frozen bushes whatever the temperature is. Nether fungus trees grow only in the Nether, and one attempted in another dimension becomes a dead fungus. Minimum and maximum temperature limits for each sapling can be changed in the mod's config file.