strawberry companion plants - Sterling Industries

Understanding the Context

Why Companion Planting Works with Strawberries

Strawberries are delicate perennial runners with shallow root systems and shallow canopies. They benefit immensely from plants that:

• Repel harmful pests (e.g., aphids, spider mites, beetles)
  
• Attract beneficial insects like ladybugs and pollinators
  
• Improve soil fertility (e.g., nitrogen fixers, nutrient accumulators)
  
• Provide ground cover to suppress weeds and retain moisture
  
• Offer partial shade, protecting strawberries from scorching sun in warmer climates

Key Insights

By selecting smart companions, you’ll create a supportive planting community that mimics nature’s own synergy.

Top Strawberry Companion Plants & Their Benefits

1. Nasturtiums (Tropaeolum spp.)

Why it works: Nasturtiums act as a natural aphid trap crop, drawing pests away from strawberries. Their bright, edible flowers also attract pollinators and beneficial insects. Plus, they exude natural compounds that deter black spot fungus—a common disease in strawberry patches.

2. Marigolds (Tagetes spp.)

Why it works: Marigolds release potent compounds from their roots that repel nematodes, aphids, and even rabbits. Their bright flowers boost pollinator activity, while their dense growth helps prevent soil erosion and retain moisture.

Final Thoughts

3. Chives (Allium schoenoprasum) & Garlic (Allium sativum)

Why it works: These onion relatives emit strong scents that repel aphids, carrot flies, and Japanese beetles. They’re especially valuable around strawberry borders, where they protect vulnerable runners without competing for space or nutrients.

4. Lavender (Lavandula spp.)

Why it works: Lavender’s fragrant blooms attract bees and butterflies, enhancing pollination. It also repels thrips and spider mites and tolerates similar sunny, well-drained conditions as strawberries, making it a matching companion.

5. Borage (Borago officinalis)

Why it works: Borage is a powerhouse companion. Its star-shaped blue flowers attract pollinators like bees, increasing strawberry set. The plant also accumulates potassium and phosphorus, enriching the soil. Plus, its forecaste leaves mulch the soil and prevent weeds.

6. Spinach (Spinacea oleracea) & Lettuce (Lactuca sativa)

Why it works: These leafy greens serve as living mulch—keeping the soil shaded, cool, and moist. They challenge weeds and reduce water evaporation while allowing strawberries to spread without interference when spacing is managed properly.

7. Comfrey (Symphytum officinale)

Why it works: Often called a “green manure,” comfrey’s large, nutrient-rich leaves act as a natural fertilizer when used as mulch or compost. It enhances soil nitrogen and structure, benefiting strawberry plants over time.