At a glance
Beetroot is one of the most versatile and productive vegetables in the UK kitchen garden. From a sowing in April, the first baby beets can be pulled in as little as eight weeks – long before most other root crops are anywhere near ready. The whole plant is edible, the leaves making a useful addition to salads and stir-fries while the roots are still developing. Sow in succession every three to four weeks from April to July and it is straightforward to have fresh roots available continuously from June right through to November. Unlike carrots and parsnips, beetroot is tolerant of less-than-perfect soil and does not require the deep, stone-free preparation that root crops with long taproots demand.
Beetroot belongs to the same family as chard and spinach beet – Beta vulgaris – and shares their preference for cool growing conditions and their susceptibility to bolting when stressed by cold or drought. Understanding what triggers bolting is the single most useful piece of knowledge for getting consistently good beetroot harvests in the variable conditions of a UK growing season. Get this right alongside the simple succession sowing system and beetroot becomes one of the least demanding and most rewarding crops in the kitchen garden.
Choosing a variety
Boltardy is the variety most widely recommended for UK growing and the right starting point for anyone new to beetroot. As the name suggests, its bolt resistance is among the best available, which makes it the safe choice for early sowings in April and May when cold spells can still trigger bolting in less resistant varieties. Detroit 2 is the classic heritage variety that has been a garden staple for decades – reliable, good flavoured and widely available. Cylindra produces long, cylindrical roots that slice into uniform rounds, which many cooks prefer for cooking and pickling. Chioggia and Burpees Golden are grown as much for their visual interest as their eating quality – Chioggia’s distinctive pink-and-white concentric rings are lost on cooking, but raw in salads it is striking; Burpees Golden has a milder, sweeter flavour than red varieties and does not bleed, which makes it far less messy to prepare.
Sowing and thinning
Beetroot seeds are unusual in that what appears to be a single seed is actually a dried fruit containing two to four true seeds clustered together. This means that even when seeds are sown individually, several seedlings will often emerge from the same sowing point and must be thinned. Monogerm varieties – where the seed cluster has been reduced to a single seed by breeding – are available and eliminate much of the thinning work, but are less widely stocked than standard varieties.
Sow in drills 1cm deep and 30cm apart, spacing seeds 5-8cm apart along the drill. In practice many gardeners sow more thickly and thin back after germination. Germination is reliable at soil temperatures above 7°C and rapid above 10°C – typically 10-14 days. Once the seedlings are 2-3cm tall, thin to one plant every 10cm for golf-ball sized roots, or one every 7-8cm for baby beets. The thinnings are edible and particularly good in salads. Soak the seeds in warm water for an hour before sowing in cold conditions to help break dormancy and improve germination speed.
Succession sowing is straightforward with beetroot and dramatically extends the harvest season. A small sowing every three to four weeks from late April through to mid-July gives continuous roots from June to November. Each sowing takes up minimal space – a single 60cm row produces ten to fifteen roots – so three or four active rows at different stages is very manageable even in a compact raised bed. Beetroot grows well alongside spring onions and radishes, all of which share a preference for cool conditions and can be interplanted to make the most of available bed space.
Seasonal care calendar
Harvesting and storing
Beetroot is at its best harvested young – golf-ball to tennis-ball sized, which is typically 8-12 weeks from sowing depending on variety and conditions. Roots left to grow larger become increasingly woody in texture and the flavour coarsens. The exception is if you are growing for storage, in which case allowing roots to reach full size before the first frosts gives more to store. To harvest, grasp the leaves close to the root and pull firmly while levering with a trowel if the soil is firm – avoid damaging the root as any cuts allow the pigment to bleed during cooking.
Twist the leaves off rather than cutting them – cutting the leaf stems leaves a wound that bleeds colour during cooking. The leaves can be used immediately while fresh. For storage, leave about 3cm of leaf stalk attached to the root and lay the roots in boxes of barely damp sand in a cool, dark, frost-free location. Stored this way, beetroot keeps well for two to three months. The kitchen garden tradition of cooking and pickling the surplus in late summer – when the July sowing is producing more roots than can be used fresh – is one of the most satisfying ways of preserving the harvest into winter.
Do not boil beetroot before peeling. Cooking beetroot whole with the skin and leaf stalks intact prevents the pigment from bleeding into the cooking water and keeps the root moist and evenly cooked throughout. Place in cold water, bring slowly to the boil and simmer for 30-50 minutes depending on size. The skin then slips off easily once cooled. Beetroot cooked this way retains its colour, texture and sweetness far better than roots that are peeled and cut before cooking.
Preventing bolting
Bolting – the plant sending up a flowering stem at the expense of root development – is the most frustrating problem in beetroot growing and the one that catches most beginners out at least once. Unlike many vegetables where bolting is primarily triggered by heat and long days, beetroot is particularly sensitive to cold. A period of temperatures consistently below 10°C for two weeks or more during early growth causes the plant to interpret the cold as winter and switch to flowering mode when warmth returns. This is why early April sowings without protection are more likely to bolt than May sowings even though May is warmer – the seedlings experience cold snaps that their May counterparts avoid entirely.
The most reliable safeguard for early sowings is covering with fleece from sowing until the soil has reliably warmed. For later sowings the risk shifts to drought stress, which also triggers bolting – the plant perceives drought as an environmental crisis and accelerates to seed to ensure reproduction. Consistent watering through dry spells in June and July prevents this. Choosing bolt-resistant varieties like Boltardy for the earliest sowings and maintaining soil moisture for summer sowings manages the two main causes of bolting effectively across the full season.
Common problems and solutions
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