Possible Clues:

• Begonia's bane
• Coming back Dad squirrelled away an insect
• Tips of climbing pea concealed plant pest
• Morsel for a ladybug
• Green-bellied sap sucker
• Help introducing gardener's scientific measure for pest
• Plant-sucking pest
• Sucker for grapes shows ego in a doctorate
• Lowlife support entertaining pub
• Ladybug's lunch, at times