Blackfly and Greenfly (aphids) are very common sap sucking pests affecting nearly all types of plants. Colonies are visible around new buds or shoots in spring onwards. Leaves may twist or yellow, become puckered and distorted as they develop. Sticky honeydew, the plants sugary sap may be observed on the leaf tips as a result of the presence of sap feeding pests. Specific species of Aphids can be found on specific host plants.
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