Possible Clues:

• Egotist from South America thus raced back
• Russians upset about opening of chemical plant
• Plant US drugs policeman is at the outset setting up secretly
• Recalled crime pinching bow, suspect mythological figure
• Tricky Russian takes in Conservative with small plant
• Bulbous plant with showy yellow or white flowers
• Retired South American, so it's written, managed plant
• In Greek mythology, the man who fell in love with his own reflection
• Drug agent is suspect plant
• He spent his time in reflection, ignoring echo, thus making a bloomer