The silverbeet lexicon

polyphenols, phenolic compounds

Compounds in silverbeet that neutralise free radicals and protect cells from oxidative stress.

The antioxidants in silverbeet are chiefly polyphenols, a group of phenolic compounds the plants themselves use for defence and which in the body help to mop up reactive molecules. The concentration is highest in the coloured varieties, where the stalks and leaves carry red, yellow and purple. Most are heat-sensitive, but a brief cooking releases them from the cell structure so they become more available.

greenfly, blackfly, plant lice

Small sap-sucking insects that cluster on soft new growth and the undersides of leaves.

Aphids congregate on the youngest, softest tissue, where they pierce cells and drain sap. A colony can stunt a seedling within days and leave the plant sticky with honeydew, which sooty mould soon follows. The first sign is usually a curl or pucker in the leaf rather than the insects themselves, since a single female can found a whole wingless generation without mating.

Beta vulgaris is the species that includes silverbeet, beetroot, sugar beet and mangelwurzel.

Beta vulgaris is a variable species that humans have pulled in several directions: towards a swollen red root, towards sugar-rich storage, and towards large leaves and stalks. The different crop types can still cross with one another, which is why seed savers keep them apart. Wild sea beet, the ancestor of them all, still grows along European coasts.

betalain pigments

Betalains are the red and yellow pigments that colour the stalks of silverbeet and the root of beetroot.

Betalains are a family of red-violet and yellow pigments found in the order Caryophyllales, to which beet belongs. They replace the anthocyanins that colour most other plants, so a red beet stalk and a red cabbage leaf are red for two entirely different chemical reasons. Betalains also carry antioxidant activity.

betacyanins, betaxanthins

The red and yellow pigments in coloured silverbeet varieties, which also act as antioxidants in the body.

Betalains are a group of nitrogen-containing pigments characteristic of the order Caryophyllales, to which chard and beetroot belong, and which occur in place of the more common anthocyanins. They divide into red betacyanins and yellow betaxanthins, and both groups have shown antioxidant activity in cell studies. The pigments sit most visibly in the coloured stalks and leaf midrib, while the green blade carries chlorophyll instead.

A biennial plant flowers and sets seed in its second year, after a cold winter.

A biennial plant lives through two growing seasons: in the first it builds up a leafy or storage body, and in the second it flowers, sets seed and dies. It needs a period of cold, usually over winter, to trigger that flowering. This two-year cycle is shared with carrots, onions and cabbages.

A brief plunge in fast-boiling water, followed by pouring the water off.

You drop the leaves into already-boiling water, not the other way round, and leave them a couple of minutes until they collapse and deepen to a stronger green. The quick heat fixes the colour and softens the coarse cellulose walls without turning the leaf to mush. The key trick is simple: pour the cooking water off when you are done, because it carries away most of the soluble oxalate.

going to seed, running to seed

Bolting is when the plant stops making leaves and sends up a flower and seed stem.

Bolting is the plant's shift from making leaves to making flowers and seed, triggered in silverbeet by cold, by lengthening days, or by drought stress. Once the seed stem starts to climb, leaf growth slows and the remaining leaves turn tougher and more bitter. Some varieties are bred to resist bolting longer.

A fungal disease that produces small grey spots with purple-brown rims on the leaves.

Cercospora beticola, the same fungus that hits sugar beet, infects chard and beet leaves as small circular spots that turn pale grey in the centre with a dark purple-brown margin. The spots multiply and merge in warm, humid weather, killing patches of leaf and reducing the harvest over the season. It overwinters on crop debris, so rotation and clearing fallen leaves matter.

Rolling the leaves tightly and cutting them into thin ribbons.

Stack the leaves, roll them into a firm cylinder, and cut across with a sharp knife into fine ribbons. The width decides the use: hair-fine for garnish and raw accompaniment, broader ribbons for wok and sauté pan. The cut opens the leaf's structure evenly, so the leaves collapse at the same rate when they meet the heat.

leaf green

Chlorophyll is the green pigment in leaves that captures light for photosynthesis.

Chlorophyll is the green pigment that sits in the chloroplasts and captures light to drive photosynthesis. It gives leaves their colour, and when it breaks down in autumn or under stress, the underlying yellows show through. Cooking briefly keeps it bright green, while overcooking turns it dull.

Growing plants together for mutual benefit, from pest masking to better use of space.

Companion planting rests on the idea that some plants do better beside certain neighbours than alone, whether by confusing pests, drawing pollinators, or filling the gaps in each other's canopy and root zone. Strongly scented herbs and flowers are the classic partners, said to mask the smell of a crop from the insects that seek it. The evidence is often anecdotal, but the practical gains in mixed cropping, better use of space, and a longer flowering season for beneficial insects are real enough.

pick-and-come-again

A harvesting method where you take the outer leaves and let the heart keep growing for repeat pickings.

Cut-and-come-again treats the plant as a living larder rather than a one-off harvest. You take the oldest outer leaves and leave the central growing point intact, so the plant simply replaces what you cut over the following days. One well-grown plant can be picked this way for weeks, even months.

Soil fungi that rot seedling stems at the base, toppling young plants overnight.

Damping off is a catch-all for several soil-borne fungi, Pythium and Rhizoctonia among them, that attack the tender stem of a seedling right at the soil line. An apparently healthy tray of seedlings can collapse to a blackened, pinched neck in a single damp night, and the disease spreads fastest in overwatered, poorly ventilated compost. Once a seedling topples, it will not recover.

The principle that the vitamin K and A in silverbeet need a little fat for the body to absorb them properly.

Fat-soluble vitamins, K and A along with E and D, do not dissolve in water and therefore cannot be taken up into the blood in the same way as the water-soluble ones. In the gut they are packed into small fat particles together with bile salts, and this is what requires the meal to contain some fat. Without fat in the dish, a good share of these vitamins simply passes through. A tablespoon of oil, butter or a little cheese is enough for absorption to work.

nitrogen feeding, fertilising

Adding nutrients, chiefly nitrogen, to keep a leaf crop growing steadily through the season.

Feeding replaces what a hungry crop takes out of the soil and keeps the plant in steady, soft growth rather than a stall. For leaf crops the key element is nitrogen, the one that drives green, leafy extension. Given too little, growth slows and the older leaves toughen, given too much and the growth is soft and attractive to pests.

Tiny jumping beetles that chew small round holes in leaves, worst on seedlings.

Flea beetles are small, shiny beetles that spring away the moment you reach for them, hence the name. They rasp dozens of pinhead-sized holes through the leaf surface, and although an established plant shrugs the damage off, a seedling can be skeletonised while its first true leaves are still unfurling. They are most active in warm, dry spring weather.

lamina, leaf surface

The leaf blade is the flat green surface of the leaf, where the plant catches light.

The leaf blade is the flat, green, light-catching part of the leaf, held out from the stalk. Its surface is where photosynthesis happens, turning light into the sugars that build the whole plant. In silverbeet the blade is unusually large, sometimes the size of an open hand.

leaf-mining fly

Fly maggots that feed inside the leaf, leaving pale winding trails between the surfaces.

The adult fly lays eggs just under the epidermis, and the maggot that hatches eats the tissue between the upper and lower leaf surfaces, leaving a pale, snaking trail visible from either side. The mine widens as the larva grows, and a heavy infestation can make a whole leaf unmarketable without ever showing an insect on it. Several unrelated flies and moths mine leaves, but on chard the spinach leaf miner is the usual culprit.

petiole, stem

The petiole is the stalk that carries each leaf blade and runs it down to the plant's crown.

The petiole is the stalk that connects each leaf blade to the main crown, channelling water and sugars between them. In silverbeet these stalks are uncommonly thick and fleshy, sometimes as wide as a finger. The stalks take longer to cook than the leaves, which is why many cooks separate the two.

carotenoids, macular pigment

Two yellow carotenoids in silverbeet that gather in the macula of the eye and protect vision from light damage.

Lutein and zeaxanthin are closely related carotenoids that the body cannot make itself, and which must come through food. They act as an internal sun filter by absorbing harmful blue light and calming oxidative stress in the retina. Green leafy vegetables are the richest source, and cooking with a little fat makes them easier for the body to take up, since they are fat-soluble.

In Norwegian, "mangold" is the common name for silverbeet, but in English the same word refers to a different beet crop.

The English word "mangold" most often refers to mangelwurzel, a root fodder beet, whereas the silverbeet plant is normally called chard or silverbeet. Across the North Sea the same word therefore points at two different crops, a reliable source of confusion when reading older garden books or seed lists from different countries.

starting indoors, pot-sowing

Sowing into small cells or pots under cover, then transplanting the established seedling out to the bed.

Sowing into modules indoors gives the seed a warm, steady start weeks before the soil outside is ready. Each seedling grows its own root ball, so you set it out with minimal root disturbance and a head start of two to three weeks on a direct-sown crop. It is the most reliable route to an early harvest and to gaps filled quickly during the season.

A natural nitrogen compound in silverbeet that the body can convert to nitrite and nitric oxide, with an effect on the blood vessels.

Nitrate is taken up from the soil by the roots and stored mainly in the leaves, where it takes part in the plant's growth and defence. In the body, some of it can be converted to nitric oxide, a signalling molecule that helps blood vessels relax. Admittedly, very high levels in drinking water and certain vegetables can be a concern for small children, but for adults, vegetable nitrate is regarded as harmless in normal amounts.

Carrying a plant through winter so it survives to resume growth, or flower, the next spring.

Overwintering is the stretch where a biennial or hardy perennial sits out the cold months, either dormant under cover or ticking over slowly in the ground. A plant that survives winter well has the advantage of an established root system the moment light returns, putting on growth weeks ahead of any spring sowing. In a biennial, surviving winter is also what triggers flowering and seed the following year.

Drawing oxalate out of the leaves by boiling and pouring the water off.

Silverbeet holds more oxalate than most kitchen greens, and most of it is soluble in water. A couple of minutes in boiling water draws much of the soluble oxalate out into the water, which you then pour off. Pan-frying silverbeet reduces the content by around 37 %, and a brief blanch before frying takes it a step further.

oxalate, ethanedioic acid

A natural acid in silverbeet that binds calcium and can be a consideration for people prone to kidney stones.

Oxalic acid occurs in silverbeet both as soluble oxalate and as bound calcium oxalate, and it is the soluble fraction the body absorbs. Much of the soluble part passes into the cooking water, so a brief blanch is the simplest way to keep intake down. Pan-frying reduces the content by around 37 %, and a blanch before frying takes it a step further.

A fungal disease that coats leaves in a white, flour-like dust, worst in dry, crowded air.

Unlike most fungi, powdery mildew thrives in dry air but needs a damp leaf surface to germinate, which is why it explodes where plants are crowded and still. It shows first as grey-white patches on older leaves and spreads upward until the leaf yellows and dies. Good spacing and morning watering, so foliage dries before nightfall, are the main controls.

The basic groundwork: lift the soil, rinse clean, and cut to size.

Silverbeet grows close to the ground and catches grit in the crinkles along the leaf veins, so a thorough rinse in cold water is the first and most important step. Drop the leaves into a large bowl of water, let the grit sink, and lift them out rather than pouring the water through a colander. Then cut the stem away from the leaf and cut to the dish: rough for sauces and soups, finer for fillings and the sauté pan.

The everyday habits of spacing, airflow and morning watering that keep most trouble at bay.

Almost every pest and disease on this list is worsened by the same thing: still, damp air around crowded plants. Giving each plant its full spacing, thinning before plants touch, and watering in the morning so foliage dries before nightfall removes the conditions fungi and soft-bodied insects breed in. A healthy, well-fed plant is also simply more tolerant of the odd aphid or mine.

Quick, hot frying in a little fat, so the leaf collapses and turns tender.

You heat a pan with a little oil or butter, add the damp leaves, and let them draw down under a lid for a couple of minutes. The liquid the leaves release forms a glossy sauce with the fat. This is the fastest route from raw to tender, and it keeps more of the fresh green colour than long boiling.

Swiss chard, chard, leaf beet, mangold

Silverbeet is a leafy cultivated plant in the goosefoot family, grown for its large green leaves and fleshy stalks.

Silverbeet is a leaf vegetable in the amaranth family, grown for its broad, crinkled green leaves and the thick, often brightly coloured stalks that carry them. It sits within the same species as beetroot and sugar beet, but has been bred for leaf and stalk rather than root. A single plant cut repeatedly can keep producing new leaves through a long season.

Molluscs that rasp ragged holes in leaves at night, devastating to young plants.

Slugs feed after dark and on damp evenings, rasping irregular holes through soft tissue and leaving a silvery trail that betrays them by morning. A single night's grazing can strip a seedling back to its ribs, and they return to the same sheltered spots, under pots, boards and leaf litter, night after night. They are worst in wet seasons and in gardens with heavy, humus-rich soil.

Cooking and blending leaf and stem into a smooth, full-bodied soup.

The leaf's volume and natural starch give a soup that thickens itself without cream or a roux, simply by blending the whole thing to a silky texture. Start with butter-softened onion and stock, add the stems first and the leaves last, and blend while it is still hot. A splash of lemon or vinegar lifts the green flavour and balances the mild earthiness.

sowing seed, direct sowing

Placing seed in soil at the right depth and moisture so it germinates into a new plant.

Sowing is the moment a seed meets soil, water and warmth and decides to grow. Outdoors you wait until the soil has warmed and dried enough to crumble rather than clump, then sow into a fine tilth at the depth the seed can push through. Most chard seed germinates within one to two weeks in soil around 10 to 15 degrees.

How deep the seed sits beneath the soil surface, the difference between even germination and none.

Depth sets how much soil the shoot must push through to reach light, and how much reserve the seed has to do it. A rule of thumb is two to three times the seed's own thickness, fine seed barely covered, coarse seed deeper. Too shallow dries out in sun, too deep exhausts the seed before it breaks the surface.

plant and row spacing

The distance between plants and between rows, the main lever for size, airflow and yield.

Spacing is how much room you give each plant above and below ground, and it decides whether a plant stays stunted or reaches its full leaf. Close spacing suits a cut-and-come-again leaf harvest, wider spacing grows a few large, well-crowned plants. It also sets how freely air moves between them, which matters when the weather turns damp.

A pesto where the whole leaf plant is ground, stems and leaves together.

You swap basil for silverbeet, often a mix of raw and briefly blanched leaves to soften the raw edge, and keep the stems in for extra bite. Grind with garlic, nuts or seed, hard cheese, and good oil into a thick, granular paste. It is a working recipe that turns a large harvest into a small, intense jar.

A taproot is a single main root that grows straight down and anchors the plant.

A taproot is a single, dominant main root that grows straight down, drawing water from depth and anchoring the plant firmly. Carrots, parsnips and radishes all store food in theirs. It is the reason seedlings of taprooted plants sulk when moved.

picking out, pricking out

Removing surplus seedlings so the remaining ones have room, light and root space to grow.

Thinning is the unromantic act of taking out the seedlings you do not need so the ones you keep can actually develop. Done early, while roots are still shallow, it barely disturbs the chosen plant, and the thinnings of many crops are good eaten. Left undone, the row turns into a crowded thicket that runs to leaf and never amounts to much.

Treating the leaf's colourful stems as a vegetable in their own right.

The stems are crisp, juicy, and carry a mild, earthy flavour that recalls the root itself, only softer. Cut them away from the leaf and give them a head start in the pan, much as you would with celery or fennel, before the leaves go in at the end. They take to braising, frying, and raw shaved fine in salad, and they keep a firm bite even after long cooking.

phylloquinone, K1

A fat-soluble vitamin that silverbeet delivers in very large amounts, essential for blood clotting and bone health.

Raw silverbeet contains around 830 micrograms of vitamin K per 100 g, more than six times the daily reference intake for an adult. The plant form, K1 (phylloquinone), dominates, and the concentration sits in the leaves themselves. The body stores only small amounts, but the requirement is also small, and a normal intake of green leafy vegetables covers it many times over.