Discovering the Best Delphinium Companion Plants for Your Garden

Are you looking for a way to enhance the beauty of your garden? Do you love the vibrant colors and elegant appearance of delphiniums? If so, you're not alone. Delphiniums are one of the most popular flowers among gardeners because of their gorgeous blooms and tall stature. However, they can also be somewhat finicky and require specific growing conditions to thrive. One way to ensure that your delphiniums are healthy and beautiful is to plant them alongside complementary companion plants. In this article, we'll explore some of the best delphinium companion plants to help you create a stunning garden that will impress all who see it.

The Benefits of Companion Planting

Companion planting involves growing different plants together in a mutually beneficial way. When correctly, companion planting can help improve soil health, increase yields, and even deter pests. In the case of delphiniums, companion plants can help provide support, add color and texture, and attract pollinators. Additionally, certain companion plants can help protect your delphiniums from common pests and diseases.

Choosing the Right Companion Plants for Delphiniums

When selecting companion plants for delphiniums, it's important to consider several factors, such as soil type, sun exposure, and water requirements. You'll also want to choose plants that have similar growth habits and complement the colors of your delphiniums. Some good options to consider include:

1. Alliums

Alliums, such as garlic and onions, are excellent companion plants for delphiniums. They are natural pest repellents and can help deter aphids, slugs, and other common garden pests. In addition, their tall stalks provide structural support for the delphiniums.

2. Foxgloves

Foxgloves are another excellent choice for companion planting with delphiniums. They have a similar height and bloom time, and their colorful flowers complement the blue and purple hues of delphiniums. Additionally, they attract bees and hummingbirds, which can help pollinate your garden.

3. Roses

Roses are a classic companion plant for delphiniums. They both require similar soil conditions and sun exposure, and their colors contrast beautifully. However, it's important to choose disease-resistant rose varieties to avoid infecting your delphiniums with common rose diseases.

4. Salvia

Salvia is a hardy perennial that thrives in full sun and well-draining soil. Its vibrant blooms come in shades of purple, pink, and red, making it an excellent choice for pairing with blue and purple delphiniums.

5. Columbine

Columbine is a delicate-looking but hardy perennial that produces unique, bell-shaped flowers in shades of blue, pink, and white. It thrives in partial shade and well-draining soil, making it an ideal companion plant for delphiniums that prefer similar growing conditions.

Other Considerations for Companion Planting with Delphiniums

In addition to choosing the right companion plants, there are a few other factors to consider when planning your garden. These include:

1. Soil Preparation

Delphiniums prefer well-draining soil with a pH between 6.0 and 7.5. Before planting, amend your soil with organic matter like compost or aged manure to improve drainage and add nutrients.

2. Sun Exposure

Delphiniums require full sun to thrive, so be sure to plant them in a location that receives at least 6 hours of direct sunlight per day.

3. Watering

Delphiniums have shallow roots and require regular watering to prevent drought stress. Be sure to water deeply once a week, rather than frequent shallow watering.

4. Pests and Diseases

Common pests that can damage delphiniums include aphids, slugs, and snails. To deter these pests, consider planting companion plants like alliums or marigolds. Additionally, keep an eye out for common diseases like powdery mildew or crown rot, which can be prevented by providing good air circulation and avoiding overwatering.

Frequently Asked Questions

1. Can I plant delphiniums with other types of flowers?

Absolutely! Delphiniums pair well with a variety of other flowers, including peonies, irises, and daylilies.

2. How do I care for my delphiniums?

Delphiniums require regular watering, deadheading, and staking to keep them healthy and looking their best. Be sure to follow the specific care instructions for your particular variety.

3. What should I do if my delphiniums aren't blooming?

If your delphiniums are failing to bloom, it may be due to a lack of nutrients or light. Try fertilizing with a balanced fertilizer, and make sure they are receiving enough sunlight.

4. Can I grow delphiniums in containers?

Yes, delphiniums can be grown in containers as long as they receive enough sunlight and are watered regularly.

5. Are delphiniums toxic to pets?

Yes, delphiniums are toxic to pets and can cause symptoms like vomiting, diarrhea, and lethargy if ingested. Keep them out of reach of curious pets.



Companion planting is a great way to enhance the beauty and health of your garden. By selecting the right companion plants for your delphiniums, you can create a stunning display that will impress all who see it. Consider incorporating some of the plants mentioned above, and don't forget to pay attention to important factors like soil preparation, sun exposure, and watering. With a little planning and care, your delphiniums and their companions will thrive.