Pasting my comment:

If anyone is looking for 1.3 support, look up 'Gloomy Deco PCP'. The author has included some C# reflection-based patches that fix the code errors with Gloomy Deco. Install this mod and then PCP below it and everything works!


Below is just an aesthetic suggestion to allow plants and trees to grow out of grass.
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Also, just thought I'd share, I patched the Grass to allow plants and trees to grow in it for a more organic look. Add this to the Grass.xml in the Defs file if you want to do the same:

<fertility>1.0</fertility>
<constructEffect>ConstructDirt</constructEffect>
<burnedDef>Soil</burnedDef>
<layerable>true</layerable>

<affordances>
<li>Light</li>
<li>Medium</li>
<li>Heavy</li>
<li>GrowSoil</li>
<li>Diggable</li>
</affordances>