Hybrid Crop Engine lets content packs define hybrid crops, which have a chance of appearing between two fully-grown parent crops.

Install

Install the latest version of SMAPI.
Unzip the mod folder into Stardew Valley/Mods.
Run the game using SMAPI.

Use
For players
This mod does nothing on its own[/b], you need to install content packs for it.

You only need to install the mod and it'll work automatically for content packs that use it. If you have two fully-grown crops in the ground with an empty spot between them, there's a random chance each day a hybrid crop will start growing there.

See the optional downloads for an example Garsnips mod (a hybrid of garlic and parnsips).

For mod authors
Edit the Data/HybridCrops asset using Content Patcher or SMAPI's content API. For example, using Content Patcher with Json Assets tokens:

{
<br />   "Format": "1.24.0",
<br />   "Changes": [
<br />      {
<br />         "Action": "EditData",
<br />         "Target": "Data/HybridCrops",
<br />         "Entries": {
<br />            "{{spacechase0.JsonAssets/CropId:Garsnip}}": {
<br />               "BaseCropA": 0,
<br />               "BaseCropB": 4,
<br />               "Chance": 0.05,
<br />            }
<br />         }
<br />      }
<br />   ]
<br />}

The key is the crop index for the hybrid crop in the TileSheets\crops spritesheet. The value is an object containing three fields:

BaseCropA: the index of the first parent crop.
BaseCropB: the index of the second parent crop.
Chance: a percentage chance of a hybrid appearing each day, as a value between 0 and 1 (e.g. 0.05 for 5%).

Compatibility
Compatible with Stardew Valley 1.5.5+ on Linux/macOS/Windows, both single-player and multiplayer.

See also