Seed Plant Calculator (TransPlant)

TransPLANT is a seed plant calculator tool to aid Caltrans Landscape Architects when selecting regionally appropriate plant species for erosion control, revegetation, biofiltration, and other highway planting situations. Before recommending grasses, forbes and plants, TransPLANT takes into consideration factors such as elevation, rainfall, soil type and regional plant communities.

TransPLANT is intended to supplement and not replace knowledge of local areas held by District personnel. Site visits to project locations are still recommended before selecting plant material.

Plant materials included in TransPLANT are primarily those species commercially available as either seed or live plants.

This tool is not appropriate for the restoration of wildland vegetation where genetically site specific species are the only alternative.


  • Neither Caltrans nor the State of California shall not be held liable for any project failures, for any incidental, accidental, or consequential commercial losses, or for any other damages.
  • Not for commercial sale or distribution.
  • No warranty is expressed or implied.

Launch the TransPLANT Calculator