probably the best thing to do is open each plant in a default scene and get it looking perfect, then save out a new tgo.
To me it looks like the BW-displacment maps are on one of the models. And the red ones look like there missing any texture on the stems...
You use two of the shrooms that I never used my self. Will be interesting to see how you make them work.
Dont be afraid to edit the textures or the geo, I wont be offended.
What I found when I was playing with them is in nearly every case (that I tried) they always looked better in groupings.
I think you got the big red one on the left to look real good. I can see the orange in it! I was never able to get that to come through very well. In fact in nature those shrooms often do have a strong orange hue as you have done... It may have been the lighting I was using, Im not sure. Anyway, it looks good.
^^ The big red one on the left looks really good if you scale up in the Y a little. I love the look even more than the original. (I think it was that model) Anyway, the big red ones stretch in the Y really really well. You can get 3-4 more variantss out of that one model by stretching up in the Y.
