CustomizePlants.Crop_InformationDescriptors.Prefix, sounds like you messed up SpecialCropSettings.
Best you share your json too.

"PlantSettings": [
{
"id": "BasicSingleHarvestPlant",
"irrigation": {
"Dirt": 0.5
},
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"temperatures": [
100.0,
253.15,
373.15,
450.0
]
},
{
"id": "MushroomPlant",
"fruitId": "Mushroom",
"fruit_grow_time": 3600.0,
"fruit_amount": 1,
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"irrigation": {},
"illumination": 0.0,
"temperatures": [
100.0,
253.15,
373.15,
450.0
],
"input_element": "CarbonDioxide",
"input_rate": 0.001
},
{
"id": "PrickleFlower",
"irrigation": {
"Water": 5.0
},
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"temperatures": [
100.0,
253.15,
373.15,
450.0
]
},
{
"id": "SeaLettuce",
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"irrigation": {
"SaltWater": 5.0
},
"temperatures": [
100.0,
253.15,
373.15,
450.0
]
},
{
"id": "BeanPlant",
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"irrigation": {},
"temperatures": [
100.0,
253.15,
373.15,
450.0
]
},
{
"id": "SpiceVine",
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"irrigation": {
"DirtyWater": 15.0,
"Phosphorite": 1.0
},
"temperatures": [
100.0,
253.15,
373.15,
450.0
]
},
{
"id": "ForestTree",
"pressures": [
0.0,
0.025,
100.00
],
"irrigation": {
"Dirt": 10.0
}
},
{
"id": "ColdBreather",
"fruitId": "ColdBreatherSeed",
"fruit_grow_time": 400.0,
"fruit_amount": 1,
"max_age": 500,
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"irrigation": {},
"temperatures": [
50.0,
100.0,
9000.15,
10000
],
},
{
"id": "GasGrass",
"illumination": 100.0
},
{
"id": "PrickleGrass",
"fruitId": "placeholder3",
"fruit_grow_time": 2400.0,
"fruit_amount": 1,
"max_age": 3600,
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"safe_elements": [
"Oxygen",
"ContaminatedOxygen",
"CarbonDioxide",
"ChlorineGas"
],
"input_element": "CarbonDioxide",
"input_rate": 1.01,
"output_element": "Oxygen",
"output_rate": 1.01
},
{
"id": "LeafyPlant",
"fruitId": "placeholder1",
"fruit_grow_time": 2400.0,
"max_age": 3600,
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"input_element": "CarbonDioxide",
"input_rate": 1.01,
"output_element": "Oxygen",
"output_rate": 1.01
},
{
"id": "BulbPlant",
"fruitId": "placeholder2",
"fruit_grow_time": 2400.0,
"max_age": 3600,
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"input_element": "CarbonDioxide",
"input_rate": 1.01,
"output_element": "Oxygen",
"output_rate": 1.01
},
{
"id": "CactusPlant",
"safe_elements": [
"Oxygen",
"ContaminatedOxygen",
"CarbonDioxide",
"Methane"
],
"pressures": [
0.0,
0.0,
2.0,
30.0
],
"input_element": "Methane",
"input_rate": 0.01,
"output_element": "CarbonDioxide",
"output_rate": 0.01
},
{
"id": "EvilFlower",
"safe_elements": [
"CarbonDioxide",
"ChlorineGas"
],
"pressures": [
0.0,
0.0,
5.0
],
"output_element": "ChlorineGas",
"output_rate": 0.012
},
{
"id": "SunnyWheat",
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"temperatures": [
100.0,
253.15,
373.15,
450.0
]
},
{
"id": "FrostBlossom",
"fruitId": "forgotfb",
"fruit_grow_time": 2400.0,
"max_age": 3600,
"pressures": [
0.0,
0.0,
20.0,
30.0
]
},
{
"id": "IcyShroom",
"fruitId": "placeholder4",
"fruit_grow_time": 2400.0,
"max_age": 3600,
"pressures": [
0.0,
0.0,
20.0,
30.0
]
},
{
"id": "MyrthRose",
"fruitId": "placeholder5",
"fruit_grow_time": 2400.0,
"max_age": 3600,
"pressures": [
0.0,
0.0,
20.0,
30.0
]
},
{
"id": "RustFern",
"fruitId": "placeholder7",
"fruit_grow_time": 2400.0,
"max_age": 3600,
"pressures": [
0.0,
0.0,
20.0,
30.0
]
},
{
"id": "ShlurpCoral",
"fruitId": "placeholder8",
"fruit_grow_time": 2400.0,
"max_age": 3600,
"pressures": [
0.0,
0.0,
20.0,
30.0
]
},
{
"id": "SporeLamp",
"fruitId": "placeholder9",
"fruit_grow_time": 2400.0,
"max_age": 3600,
"pressures": [
0.0,
0.0,
20.0,
30.0
]
},
{
"id": "Tropicalgae",
"fruitId": "placeholder0",
"fruit_grow_time": 2400.0,
"max_age": 3600,
"pressures": [
0.0,
0.0,
20.0,
30.0
]
},
{
"id": "PricklyLotus",
"fruitId": "placeholder6",
"fruit_grow_time": 2400.0,
"max_age": 3600,
"pressures": [
0.0,
0.0,
20.0,
30.0
]
},
{
"id": "Fervine",
"fruitId": "FervineBulb",
"fruit_grow_time": 400.0,
"pressures": [
0.0,
0.0,
20.0,
30.0
]
},
{
"id": "CoalPlant",
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"temperatures": [
100.0,
253.15,
373.15,
450.0
]
},
{
"id": "ResonantPlant",
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"temperatures": [
100.0,
253.15,
373.15,
450.0
]
},
{
"id": "CactusFruit",
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"temperatures": [
100.0,
253.15,
373.15,
450.0
]
},
{
"id": "CreamtopMushroom",
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"temperatures": [
100.0,
253.15,
373.15,
450.0
]
},
{
"id": "KakawaTree",
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"temperatures": [
100.0,
253.15,
373.15,
450.0
]
},
{
"id": "PalmeraTreePlant",
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"temperatures": [
100.0,
253.15,
373.15,
450.0
]
},
{
"id": "SP_PumpkinPlant",
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"temperatures": [
100.0,
253.15,
373.15,
450.0
]
},
{
"id": "TremWheatPlant",
"pressures": [
0.0,
0.0,
20.0,
30.0
],
"temperatures": [
100.0,
253.15,
373.15,
450.0
]
}
],
"SpecialCropSettings": {
"placeholder1": {
"Algae": 40,
"Clay": 20,
"LeafyPlantSeed": 1
},
"placeholder2": {
"Algae": 40,
"Fertilizer": 20,
"BulbPlantseed": 1
},
"placeholder3": {
"Creature": 40,
"PrickleFlowerSeed": 1,
"PrickleGrassSeed": 1
},
"placeholder4": {
"Ice": 40,
"Snow": 20,
"IcyShroomSeed": 1
},
"placeholder5": {
"Creature": 40,
"Lime": 1,
"MyrthRoseSeed": 1
},
"placeholder6": {
"Sand": 40,
"Glass": 1,
"PricklyLotusSeed": 1
},
"placeholder7": {
"Rust": 40,
"MaficRock": 20,
"RustFernSeed": 1
},
"placeholder8": {
"BleachStone": 20,
"Salt": 10,
"ShlurpCoralSeed": 1
},
"placeholder9": {
"Coal": 40,
"Diamond": 1,
"SporeLampSeed": 1
},
"placeholder0": {
"Algae": 40,
"SlimeMold": 40,
"TropicalgaeSeed": 1
},
"forgotfb": {
"Snow": 40,
"Ice": 20,
"FrostBlossomSeed": 1
},
},
Mostly trying to make the decorative plants from omni plants a bit more useful. And up all pressure tolerances bc for some godforsaken reason my current base naturally comes with 13k oxygen pressure.

That's a lot of stuff. How often did you validate that it's still working? Obviously it's a bad idea to put so many changes in at once. Afterwards you won't know what causes the issue.

Also, since other mods are involved I need the actual file. There is just too much that can go wrong with "ModPlants". I recommend you use a file share or pastebin.

Also also, it seems you have more than just omni plants installed. Please tell me all the mods that add new plants.

I have every plant mod, but only added stuff to the omniplants one. I think I know where I went wrong here, but can't test because ONI has stopped working for me at all, even deleting all my mods. Anyhow, "ShlurpCoralSeed" does not exist. Instead, it's "ShlurpCoralPolyp".

Update: It was the config for the Shlurp Coral Seeds that was causing the issue. It's working just fine now and I'm a dumbass for not checking every seed code to start with.