Plants and Trees Are Missing from Rendered Image

Symptom: The 3D view includes plants and trees, but they do not display in the rendered image.

Issue: This problem can occur when you render an image in a project that was created using Revit 2008 (or an earlier release), and the plants were defined using AccuRender procedures. Revit no longer supports AccuRender procedures.

Solution: Edit the plant family properties to specify a render appearance. Then render the image again. See Specifying a Render Appearance for an RPC Family.