3. A barrier of marigolds around or nearby your trees will repel woolly aphids with their fragrance over summer. 4. You can also plant onions, garlic and chives in your garden to help repel aphids.
Studies suggest citronella helps repel mosquitoes, as well as fleas, aphids, mites ... bug sprays can help keep bugs away from your plants. However, others, like cinnamon essential oil, may ...