Rhubarb Companion Plants: What to Grow (and Avoid) Near Rhubarb

Rhubarb is a hardy perennial vegetable known for its tart, red stalks and low-maintenance growing habits. While rhubarb does well on its own, pairing it with the right companion plants can help it thrive, discourage pests, and even make better use of garden space. In this guide, we’ll cover the best rhubarb companion plants—and which ones to avoid.

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Why Use Companion Plants With Rhubarb?

Companion planting with rhubarb offers several benefits:

• Pest control: Some plants repel rhubarb’s common pests, like aphids and beetles.

• Pollinator attraction: Flowering companions help draw bees and beneficial insects.

• Soil support: Certain herbs and vegetables improve soil health or deter weeds.

• Efficient use of space: Fill in the gaps around your rhubarb with helpful plant partners.

Best Rhubarb Companion Plants

Here are a few great plants to grow alongside rhubarb:

🌼 Onions and Garlic

These pungent bulbs help deter pests like aphids and spider mites. Their shallow roots also won’t compete with rhubarb’s deep roots.

🌿 Chives

Great for deterring pests and attracting pollinators. Chives are low-growing and thrive in the same conditions as rhubarb.

🌸 Marigolds

These bright flowers attract beneficial insects and repel many common pests. A beautiful and practical rhubarb companion!

🥬 Lettuce and Spinach

Cool-weather leafy greens make excellent short-season companions for rhubarb and help shade the soil.

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Plants to Avoid Near Rhubarb

While many plants play nicely with rhubarb, there are a few you should avoid:

🍅 Tomatoes

Rhubarb and tomatoes are both heavy feeders and can compete for nutrients. Tomatoes also attract whiteflies, which may affect rhubarb.

🥔 Potatoes

Similar to tomatoes, potatoes can spread soil-borne diseases and pests that harm rhubarb.

🌽 Corn

Takes up a lot of space and competes with rhubarb for sunlight and soil nutrients.

Companion Planting Tips for Rhubarb

• Spacing: Rhubarb plants need room to spread. Avoid overcrowding.

• Mulch: Use organic mulch to retain moisture and suppress weeds around rhubarb and its companions.

• Timing: Rhubarb is an early-season crop—plan companion planting based on seasonal compatibility.

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Final Thoughts

Rhubarb is a tough and rewarding plant, but with a few well-chosen companions, you can take your rhubarb patch to the next level. Whether you’re warding off pests, maximizing space, or creating a more vibrant garden bed, companion planting makes a real difference.

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