Article category: Vegetable Gardening. Published 2026-04-28 by Pocket Gardener Team.
Topics: companion planting, vegetable garden, garden planning, pest control, organic gardening, polyculture, plant combinations.
Questions answered in this article
Does companion planting actually work?
Yes, scientific studies confirm that strategic plant pairings reduce pest pressure, improve pollination, and enhance nutrient availability. Results vary by climate and implementation, but the principles are well-supported by research.
What should not be planted near tomatoes?
Avoid planting fennel, potatoes, and mature brassicas near tomatoes. Potatoes share diseases like blight, fennel inhibits growth, and brassicas compete for nutrients. Basil and marigolds are excellent tomato companions.
Can companion planting replace pesticides?
Companion planting significantly reduces pest pressure but may not eliminate all problems in high-pressure situations. It works best as part of an integrated approach including healthy soil, proper spacing, and vigilant monitoring.
How close should companion plants be to each other?
Most companions should be within one metre to interact effectively through scent, shade, or root contact. However, ensure adequate spacing for air circulation and growth — companion planting is not an excuse to overcrowd.
Where can I plan a companion planting layout?
You can sketch layouts on paper or use digital garden planners. Pocket Gardener can help with broader garden design inspiration, but companion planting layouts still benefit from your own crop-specific planning.