How to Grow Beetroot

Onions' sulphur compounds deter leaf miners and aphids that attack beetroot foliage, while beetroot's deep taproot aerates soil at a different horizon than the shallow onion bulb. They complement each other without competing.

Beetroot and cabbage occupy different root zones — beetroot's deep taproot draws minerals from lower layers while cabbage's fibrous roots feed near the surface, minimising nutrient competition. Beetroot also adds potassium to the root zone that benefits neighbouring brassicas.

Beetroot's deep roots mine calcium and boron from lower soil horizons and, as they decay, release these minerals near the surface where broccoli's fibrous roots can access them. The pairing works best when beetroot is sown a few weeks before transplanting broccoli.

Lettuce's shallow, spreading roots and low profile let it fill the gaps between beetroot plants, making full use of bed space without root competition. Harvest lettuce before beetroot canopy expands to avoid shading.

Garlic's allicin-rich root exudates suppress soilborne fungi including Botrytis that can rot beetroot crowns, acting as a natural fungicidal mulch at root level. Plant garlic cloves 10–15 cm from beetroot rows.

Runner beans fix atmospheric nitrogen and release it gradually via root nodule turnover — but the resulting nitrogen spike suppresses beetroot's sugar development and promotes excessive leafy growth at the expense of the root. Separate by at least 60 cm.