Are you an organic gardener or are you open to using pesticides? It appears that last year was a record year for grasshoppers in Texas -
http://www.mcclatchydc.com/201... - and it seems that this year may not be much better.
I would tend to try to isolate these guys asap - perhaps with a geotex/flooating row cover - and treat with a pesticide if you are not opposed to their use. Tamu has a good article that details the options here:
http://citybugs.tamu.edu/facts...
I wish I could be more help -I hope others will jump in with suggestions soon.
