Roses are iconic in American gardens, but pairing them with the right companion plants can enhance their beauty, deter pests, and improve soil health. Companion planting involves selecting plants that benefit roses by attracting pollinators, repelling harmful insects, or providing ground cover to retain moisture. Below are some of the best companion plants for roses, categorized by their benefits.
Certain plants naturally repel pests that commonly affect roses, such as aphids and Japanese beetles.
Garlic (Allium sativum): Garlic emits a strong scent that deters aphids and other rose pests. Planting garlic around roses can reduce infestations.
Marigolds (Tagetes spp.): Marigolds release a chemical that repels nematodes and whiteflies. Their bright flowers also add color contrast to rose beds.
Lavender (Lavandula spp.): Lavender’s fragrance deters deer and rabbits while attracting pollinators like bees.
Some companions enhance soil nutrients or structure, promoting healthier rose growth.
Clover (Trifolium spp.): Clover fixes nitrogen in the soil, providing a natural fertilizer for roses. It also acts as a living mulch to retain moisture.
Comfrey (Symphytum officinale): Comfrey’s deep roots bring up nutrients like potassium and phosphorus, benefiting nearby roses. Its leaves can be used as mulch or compost.
Pollinators and predatory insects help roses thrive by improving pollination and controlling pests.
Yarrow (Achillea millefolium): Yarrow attracts ladybugs and lacewings, which prey on aphids. Its flat flower clusters also complement rose blooms.
Catmint (Nepeta spp.): Catmint draws bees and hoverflies, which pollinate roses while keeping pest populations in check.
Companion plants can enhance the visual appeal of rose gardens with contrasting textures and colors.
Salvia (Salvia spp.): The spiky flowers of salvia contrast beautifully with rose blooms, and their purple or blue hues complement pink or red roses.
Geraniums (Pelargonium spp.): Geraniums provide low-growing foliage that fills gaps between roses, adding vibrant color and deterring pests like beetles.
Low-growing plants help retain soil moisture and suppress weeds around roses.
Creeping Thyme (Thymus serpyllum): This aromatic herb forms a dense mat that conserves water and adds fragrance to the garden.
Alyssum (Lobularia maritima): Alyssum’s tiny white or purple flowers attract pollinators while acting as a living mulch.
Some plants compete aggressively with roses or attract harmful pests.
Black Walnut (Juglans nigra): Releases juglone, a toxin that inhibits rose growth.
Rhododendrons (Rhododendron spp.): Prefer acidic soil, which may conflict with roses’ preference for neutral pH.
