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repellent to many pests [3] Parsley: repels asparagus beetles [3] Peppermint: repels aphids, cabbage looper, flea beetles, squash bugs, whiteflies, and the Small White [3] Petunias: repel aphids, tomato hornworm, asparagus beetles, leafhoppers, [2] and squash bugs [3] Pitcher plants: traps and ingests insects Radish: repels cabbage maggot and ...
Viburnum lesquereuxii leaf with insect damage; Dakota Sandstone (Cretaceous) of Ellsworth County, Kansas. Scale bar is 10 mm. Knowledge of herbivory in geological time comes from three sources: fossilized plants, which may preserve evidence of defense (such as spines) or herbivory-related damage; the observation of plant debris in fossilised animal feces; and the structure of herbivore mouthparts.
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Some flea collars for pets have pennyroyal oil or the herb can be crushed in the lining. Humans have also put crushed pennyroyal stems in their pockets or on their clothing to ward off unwanted insects. [25] However, when using the pennyroyal plant as a pest repellent, the use of the concentrated pennyroyal oil should be avoided.
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He found that some plants give off very active substances that help to prevent them from rotting or from being eaten by some insects and animals. Phytoncides are a biologically active substance of plant origin that kills or inhibits growth and development of bacteria, microscopic fungi, and protozoa.
The bugs won’t hurt you but they are serious about eating fruit trees, corn, garden vegetables and some ornamental plants. The adults gravitate to fruit, younger bugs also like leaves and stems.
Some birds and insects use defensive regurgitation to ward off predators. The northern fulmar vomits a bright orange, oily substance called stomach oil when threatened. [53] The stomach oil is made from their aquatic diets. It causes the predator's feathers to mat, leading to the loss of flying ability and the loss of water repellency. [53]
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