Possible Clues:

• ...if such a processing plant appears
• Explorer and I find a flower
• Plant with drooping purple, red or white flowers
• Half-caught fish bursting into 29
• Ornamental garden shrub
• If such a thing could be a wild flower
• Leaders of Florist's Union can have some irrational antipathy for plant
• One needs to change if such a colour
• Antarctic explorer bringing back fine showy shrub
• Flower unsuitable as present, say?