TamStar: State-of-the-Art Turf from Texas A&M

TamStar was developed at Texas A&M AgriLife Research and Extension Center in Dallas by Dr. Ambika Chandra, Dr. Anthony D. Genovesi, Dr. Milt Engelke. The AgriLife Research Center conducts research and development for sustainable agriculture and ecology. Using state-of-the-art turfgrass breeding techniques, Dr. Ambika Chandra and her team developed TamStar, the first interploid hybrid turfgrass variety. With deep rooting potential, superior drought tolerance and resistance to gray leaf spot disease, TamStar is well suited for residential lawns, commercial landscapes and other recreational sites throughout Texas.

For more information on TamStar, view the TamStar United States plant patent or TamStar Registration on the Journal of Plant Registrations, which includes additional colored photos, tables and graphs.

TamStar was tested against commercial St. Augustinegrasses including Floratam, Palmetto, Raleigh, Texas Common, Delmar, Captiva and Mercedes.


  • TamStar is an interploid hybrid that crosses TAES 5382 (African polyploidy) and Palmetto St. Augustinegrass.
  • TamStar was first vegetatively propagated in Dallas, Texas using stolon nodes.



  • Highly tolerant to gray leaf spot disease
  • TamStar was tested against 17 commercial and advanced breeding lines of St. Augustinegrasses. Results showed TamStar was consistently resistant to gray leaf spot disease.
  • Highly tolerant to southern chinch bug and tropical sod webworm
  • TamStar’s susceptibility to southern chinch bugs was evaluated by allowing the bugs to reproduce and develop on 8 different St. Augustinegrasses. Results showed significantly reduced levels of fecundity and juvenile development of chinch bugs.
  • TamStar was tested against 9 other advanced breeding lines for resistance against tropical sod webworm. TamStar demonstrated a significant mortality rate at pupation and at adult emergence.
  • Superior drought tolerance
  • Drought stress response test: At 34, 45, 62 and 67 days of no watering, TamStar exhibited higher turfgrass quality than Raleigh. After 13 days of re-watering, TamStar and Floratam were the only varieties that recovered to an acceptable quality. After 103 days, Raleigh and Floratam were dead and unable to recover from re-watering, unlike TamStar.
  • Deep rooting potential
  • To further examine drought stress response, rooting evaluations were conducted. A greater root depth development was observed in TamStar compared to Floratam.
  • Adaptive to Texas climate zones
  • Superior drought tolerance paired with a rapid ability to recover from drought once irrigation is resumed makes TamStar suitable for regions in Texas where drought may occur.