Some insects that predate on flowers favor red-hot , ironic condition , while others like cold , wet conditions . But all are scavengers by nature and are attracted to unhealthy plant material , such as diseased or decompose fruit and leaves .
Some insects that prey on flowers prefer hot , dry atmospheric condition , while others like stale , tight conditions . But all are scavengers by nature and are appeal tounhealthy plant fabric , such as diseased or crumble fruit and leaf . Nevertheless , only a diminished pct of garden worm — about 3 percent — cause damage to plant and a smaller percentage still eat flowers . So before you spray every bug in sight with pesticide , you should name those that cause the most scathe .
Aphids
Aphids ( Hemiptera ordering ) are petite , soft - bodied worm of various colour up to 1/8 in in length . aphid boom in warm , moist condition and quarry on efflorescence , prefer those sensationalistic in color . A problem with aphid plague may go hand in hand with the presence of ants , which glean the honeydew — a vindicated , viscous liquidness eliminate by aphids — and carry the insect about from plant to embed . yearly herbs cilantro ( Coriandrum sativum ) and Anethum graveolens ( Anethum graveolens ) repel aphids , as does fennel ( Foeniculum vulgare ) , hardy in U.S. Department of Agriculture plant hardiness zones 4 through 9 . Annual genus Nasturtium ( Tropaeolum spp . ) and marigolds ( Tagetes spp . ) also repel these insects .
Thrips
Thrips ( Thysanoptera order ) are even small than aphids , about 1/25 inch in length , and therefore are difficult to see without a magnifying chalk . Despite their tiny sizing , thrips can be hugely destructive to flowers . They are black or drinking straw - colour and , like aphids , show a pronounced preference for pale non-white flowers , such as white or yellow . Thrip damage to senesce blossom , blossom buds and other flora tissue paper is characterize by teetotal , pale or dark spots , due to the insects take in nutrients from the works .
Other Pests
The Japanese beetle ( Popillia japonica ) make major damage to flowers and flower bud of many cosmetic plant . About 3/8 in in length , it has a dingy , metallic unripe chief and dark , metal tan wing case . The tarnished plant bug ( Lygus lineolaris ) , a dappled browned insect 1/4 inch in length , and the fourlined plant bug ( Poecilocapsus lineatus ) , a act larger and identified by four black banding on its back , cause similar problem . Early flowering plants are particularly susceptible to attack . The European earwig ( Forficula genus Auricularia ) is normally consider good to flower gardens , because it feeds on harmful insects and their eggs . If unnatural conditions shape cause the earwig population to explode , earwig can damage efflorescence blossoms just as much as more obvious pests .
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