Possible Clues:

• Plant book, say, on first class return
• Be a mendicant on the blooming start of this
• Flower with colorful leaves
• Showy-leaved flower
• Vamoose shortly to Iowa - what a bloomer
• Blooming well ask for alms on a single A
• This bloomer could be a big one
• Certain plant
• Plant engineers gain OBE
• Go away briefly — brought back fine plant