Using Information from a SQL database I'm generating a string with values from two 'cells' [Plant Name], [Plant Description] so it now reads [Plant Name - Description].

I'm now looking to edit the [Plant Description] through the new string [Plant Name - Description].

Because I can identify [Plant Name] I think this is possible but I have no clue on how to do this? any ideas?

PHP Code:
<textarea name="ItemDescription[<?php echo $rowR; ?>]" cols="50" rows="2" id="textarea"><?php 
              $savedref=$_GET['save'];
              if($savedref){  
                      $query = mysql_query("SELECT * FROM database WHERE ref='$savedref'");
                      $editedtext = mysql_fetch_assoc($query);
                      $newDescription = explode(".---.",$editedtext['worktype']);
                                  echo $newDescription[($rowR-1)];}else{
              
              $description = mysql_query("SELECT * FROM treetable WHERE (Tree='$nm[$rowR]' OR Shrub='$nm[$rowR]') AND Type_Code='$Des[$rowR]'") or die(mysql_error());
              $desc = mysql_fetch_assoc($description);
              
              if(isset($ItemDescription)){echo $ItemDescription[$rowR];}else{echo $nm[$rowR]." - ".$desc[Type];}}
              
               ?></textarea>

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