Possible Clues:

• Seems that a tin like this is blooming spiky
• May it be grown in a tin like this?
• Cash, aunt, for this plant
• Prickly-leaved plant
• Prickly plant in a container shut carelessly
• Answer therefore must include prison for plant
• Adult accordingly purchases container for plant
• Leaf, sometimes carved on furniture
• Shrub head of arboretum is able so to provide
• Plant with prickly leaves