Try companion planting

What to do

• Plant French marigolds in between tomato plants to deter aphids.
• Grow carrots and leeks together. Both have strong scents that drive away each other's pests.
• Plant nasturtium with cabbages - they're a magnet for caterpillars that will then leave the cabbages alone.
• Garlic planted among roses will ward off aphids.
• Grow dill in the garden to attract aphid-eating hoverflies.
• Make sure companion plants are planted at the same time as your edible crops to prevent pests from getting a foothold.