🌽 Sweetcorn Zea mays
🌾 Grain 🧬 Grass family (Grasses)
Companion plants for Sweetcorn (Grain): good neighbours to grow together, plants it dislikes, and sowing tips. EkoHarita — Dünya varmış!
🌿 Open in the Interactive Chart
Good Companions — Plant Together
Bad Neighbours — Keep Them Apart
Conflicting Neighbours
Growing & Sowing Tips
📅 SowingStart seedlings indoors 2-3 weeks before the last frost, or sow directly in May-June once the soil warms (at least 10°C).
🌱 Depth2-3 cm
📏 Spacing20-30 cm within the row, 60-90 cm between rows; always plant in multiple rows (a block of at least 3-4 rows) for wind pollination. Sources: West Coast Seeds, WVU Extension.
🌞 SunFull sun
💧 WateringRegular watering during tasseling (flowering) is critical; partially drought-tolerant
🧺 Harvest70-90 days after sowing; harvested once the silks turn brown and the kernels fill out
🪴 SoilNutrient-rich, deep, well-moistened soil; add plenty of compost before sowing
⭐ DifficultyEasy
🗓️ SeasonSpring/Summer
📅 Calendar is for the Northern Hemisphere; in the Southern Hemisphere shift sowing times by ~6 months.
💡 Key tip: Sow in a block of at least 4x4 so wind pollination is effective; in a single row the corn may not form ears. Once the tassels appear, watering must never be neglected.
🤝 Companion logic: The classic 'Three Sisters': the corn supports the climbing bean, the bean (a legume) fixes atmospheric nitrogen and enriches the soil, and the spreading squash leaves act like a living mulch, shading the soil, conserving moisture and suppressing weeds. The bean must be a POLE (climbing) type; a bush bean is no use in this system. Source: UF/IFAS.
🔬 Scientific References
- The Old Farmer's Almanac (t.y.) Plant a Three Sisters Garden: Corn, Beans, and Squash. Erişim adresi: https://www.almanac.com/content/three-sisters-corn-bean-and-squash (Erişim: 15 Haziran 2026).
- Zhang, C., Postma, J.A., York, L.M. ve Lynch, J.P. (2014) 'Root foraging elicits niche complementarity-dependent yield advantage in the ancient three sisters (maize/bean/squash) polyculture', Annals of Botany, 114(8), s. 1719–1733. doi:10.1093/aob/mcu191.
- MasterClass (2026) Corn Companion Planting Guide: 10 Plants to Grow With Corn. Erişim adresi: https://www.masterclass.com/articles/corn-companion-planting-guide (Erişim: 15 Haziran 2026).
- Gardener's Path (t.y.) Corn (Zea mays) Growing Guides. Erişim adresi: https://gardenerspath.com/corn-zea-mays/ (Erişim: 15 Haziran 2026).
- Colorado State University Extension (2021) CO-Horts: Growing the Three Sisters. Erişim adresi: https://csuhort.blogspot.com/2021/12/growing-three-sisters.html (Erişim: 15 Haziran 2026).
- Native Seeds/SEARCH (t.y.) How to Grow a Three Sisters Garden. Erişim adresi: https://www.nativeseeds.org/blogs/blog-news/how-to-grow-a-three-sisters-garden (Erişim: 15 Haziran 2026).
- Insteading (t.y.) Companion Planting For Sweet Corn. Erişim adresi: https://insteading.com/blog/companion-planting-sweet-corn/ (Erişim: 15 Haziran 2026).