Dahlias are a popular flower known for their large, showy blooms and long blooming period. However, like all plants, dahlias can benefit from the companionship of other plants. Here are some specific instructions for gardeners on what plants to companion plant with their dahlias:
- Marigolds: Marigolds are known to repel pests and diseases that can harm dahlias. Planting marigolds near dahlias can help protect the dahlias from pests and diseases.
- Zinnias: Zinnias and dahlias have a symbiotic relationship where dahlias can protect Zinnias from root-knot nematodes and in return Zinnias attract pollinators to the garden which benefits the dahlias as well.
- Nasturtiums: Nasturtiums are known to repel pests and diseases that can harm dahlias, such as aphids, whiteflies, and spider mites. Planting nasturtiums near dahlias can help protect the dahlias from these pests and diseases.
- Sunflowers: Sunflowers and dahlias can be planted together to create a visually pleasing garden. Sunflowers can protect dahlias from pests and diseases, and also help to attract pollinators to the garden.
- Lettuce: Lettuce is a great companion plant for dahlias. Lettuce grows quickly and can shade the dahlia's roots, helping to keep them cool and moist.
- Garlic: Garlic is known to repel pests and diseases that can harm dahlias, such as aphids, spider mites, and Japanese beetles. Planting garlic near dahlias can help protect the dahlias from these pests and diseases.
- Petunias: Petunias are a good companion for dahlias as they attract pollinators to the garden and also help to repel pests such as aphids and tomato hornworms.
It's important to note that companion planting can be affected by environmental conditions, soil type, and other factors. It's always a good idea to check with local gardening experts and to monitor your plants' growth and health to see if companion planting is working for you. Keep in mind to give enough space for each plant to grow, and not to overcrowd the dahlias.