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Delphiniums are stunning flowering plants that add height and elegance to any garden. However, they are often susceptible to pests such as aphids, slugs, and caterpillars. Using companion planting is an effective, eco-friendly way to protect delphiniums from these pests without the use of chemicals.
What Are Companion Plants?
Companion plants are species that are grown together because they benefit each other in various ways. In the context of pest control, certain plants can repel pests, attract beneficial insects, or improve the health of neighboring plants.
Best Companion Plants for Delphinium
- Marigolds: Known for their pest-repelling properties, marigolds deter aphids, nematodes, and beetles. Their strong scent confuses pests and keeps them away from delphiniums.
- Lavender: This fragrant herb attracts pollinators and beneficial insects like hoverflies, which prey on aphids. Lavender also repels moths and fleas.
- Chives: Chives produce a strong aroma that deters aphids and other soft-bodied insects. They also attract beneficial insects that help control pests.
- nasturtiums: These act as trap crops, attracting aphids and other pests away from delphiniums. They also attract predatory insects like ladybugs.
- Feverfew: This flowering herb repels a variety of pests including aphids and beetles, providing a natural barrier around delphiniums.
How to Plant Companion Plants
When planting companion plants with delphiniums, consider spacing and the growth habits of each species. Plant marigolds, lavender, and chives around the base of delphiniums, ensuring they have enough space to grow without overcrowding. Nasturtiums can be planted nearby as ground cover or in hanging baskets to maximize their pest-repelling effects.
Additional Tips for Natural Pest Control
- Encourage Beneficial Insects: Avoid using pesticides that harm pollinators and predatory insects. Plant a variety of flowering plants to attract beneficial insects.
- Maintain Garden Hygiene: Remove diseased or infested plant material promptly to prevent pest spread.
- Regular Monitoring: Check your plants frequently for signs of pests and act early to manage any issues.
- Healthy Plants: Keep delphiniums healthy with proper watering, fertilizing, and pruning to make them less attractive to pests.
Using companion plants for natural pest control not only protects your delphiniums but also promotes a balanced and healthy garden ecosystem. Incorporate these beneficial plants into your garden to enjoy vibrant blooms and fewer pests throughout the growing season.