Companion Planting for Potatoes

Companion planting is a time-tested gardening method that places plants together for mutual benefit—naturally boosting growth, discouraging pests, and even improving flavor. Potatoes have some great allies and a few plants best kept at a distance.

Best Companions for Potatoes

Beans and Peas: Fix nitrogen in the soil, supporting healthy potato growth.
Cabbage Family (Cabbage, Kale, Broccoli): Benefit from similar soil conditions, and their presence can help deter pests.
Corn: Returns organic matter to the soil post-harvest.
Marigolds and Nasturtiums: Their scent deters aphids, potato beetle, and other pests and attracts pollinators and beneficial insects.
Horseradish: Planted at the corners of the potato patch, it’s believed to boost potatoes’ disease resistance.
Herbs (Chamomile, Basil, Parsley): Improve soil quality and attract beneficial insects.

Plants to Avoid Near Potatoes

Tomatoes, Eggplant & Peppers: All are nightshades like potatoes and susceptible to the same diseases, especially blight.
Cucumbers, Pumpkin, Squash: Compete for space and nutrients, and don’t offer substantial benefits.
Sunflowers: Can stunt potato growth due to certain chemical exudates.
Raspberries: Increase the risk of blight.

How to Plan Your Potato Companion Bed

Alternate potato rows with beans, cabbage, or marigolds for a pest-reducing patchwork.
Add a border of nasturtiums around the potato bed for trap cropping (attracting pests away).
Grow horseradish at the corners, but don’t place it in the main patch—horseradish spreads.

Tips for Companion Planting Success

Don’t overcrowd: Leave enough space for airflow to prevent fungal disease.
Rotate crops each year to reduce pest problems.
Combine with mulch and regular weeding for even healthier plants.

Bonus: Try Intercropping

Quick greens like lettuce or spinach can be grown between potato rows and harvested long before potato foliage overtakes the space.
Early radishes or spring onions give way as potatoes expand.

⭐ Recommended Products — Garden & Allotment Essentials for March

March is when the growing season truly begins. Seeds are being sown daily, beds are prepared and late frosts are still possible — these essentials help produce strong plants and a successful start.

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Heated Propagators, Heat Mats & Grow Lights — improves germination and prevents leggy seedlings during cold nights. 👉 Click here to see top options

Seed & Cutting Compost — essential for healthy seedlings and strong root growth. 👉 Click here to see top options

Garden Fleece & Plant Protection Covers — protects seedlings, potatoes and early plantings from late frost. 👉 Click here to see top options

Spring Vegetable Seeds — carrots, beetroot, peas, spinach and salads can all be started now. 👉 Click here to see top options

Garden Kneeler & Seat — makes long sowing and planting sessions far more comfortable. 👉 Click here to see top options

Pressure Washer (Greenhouse & Patio Cleaning) — clean patios, paths and greenhouses before planting. 👉 Click here to see top options

Solar Garden Lights — perfect for enjoying the garden during brighter spring evenings. 👉 Click here to see top options

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