Rose Companion Planting Guide — Compatible Plant Partners

Companion planting is one way to keep your rose garden more beautiful and healthy. Planting compatible species at the base and around your roses provides multiple benefits including pest deterrence, soil improvement, and enhanced aesthetics. Here is a comprehensive look at rose companion planting based on scientific evidence and practical experience.

What Is Companion Planting?

Companion planting is a cultivation method where mutually beneficial plants are grown near each other. For roses, expected benefits include:

• Pest deterrence: Certain plants emit scents or compounds that repel aphids, spider mites, and other pests
• Beneficial insect attraction: Flowering companions attract ladybugs, lacewings, and other natural predators of rose pests
• Soil improvement: Leguminous plants fix nitrogen in the soil, benefiting rose growth
• Disease prevention: Improved air circulation and biodiversity reduce fungal disease pressure
• Aesthetic enhancement: Underplanting fills gaps and extends the season of interest

Best Companion Plants for Roses

Lavender: Its strong fragrance repels aphids and whiteflies. Plant at the base of roses for both pest control and visual beauty.

Catmint (Nepeta): Excellent groundcover that deters pests while attracting pollinators. Blue-purple flowers complement rose blooms.

Garlic and Chives (Alliums): Their sulfur compounds repel aphids and may help prevent black spot. Plant cloves around rose bases in autumn.

Marigolds: Their roots exude substances that repel nematodes. French marigolds are particularly effective.

Geraniums: Scented geraniums repel Japanese beetles. Their foliage fills the base of rose bushes attractively.

Plants to Avoid Near Roses

Avoid heavy feeders that compete for nutrients, invasive species that crowd roses, and plants susceptible to the same diseases. Specifically, avoid planting roses near large trees whose roots compete for water and nutrients.

On BriChoku, consult with rose breeders about companion planting strategies suited to your specific rose varieties and garden conditions.