Common spinach (Spinacia oleracea) is generally grown as a cool-season annual in most areas, although it's sometimes a biennial in U.S. Department of Agriculture plant hardiness zones 3 through 9.As spinach begins to bolt, its leaves change shape, from oval to an arrowhead form.As the days become longer and warmer during the end of spring or early summer, spinach plants send up flower stalks.You have a few options when spinach begins to bolt, such as pulling it up immediately and planting a warm-season crop in its place.Seal the envelope, and store the seeds in a cool, dry location, such as a basement or garage, until planting time comes again.


Spinach Planting & Spinach Growing

This plant food works in tandem with great soil to help you achieve the best possible spinach harvest.In the spring, plants will grow tall and bloom (called bolting) as soon as the days are longer than 14 hours.Our variety is slow to bolt, which is a real bonus for gardeners who don’t have the luxury of long stretches of mild weather. .


Spinach (Spinacia oleracea) is a leafy green flowering plant native to central and western Asia.Its leaves are a common edible vegetable consumed either fresh, or after storage using preservation techniques by canning, freezing, or dehydration.It may be eaten cooked or raw, and the taste differs considerably; the high oxalate content may be reduced by steaming.Originally from Persian aspānāḵ, entering into the European languages by way of Latin, which received it from Arabic.In a 100 g (3.5 oz) serving providing only 23 calories, spinach has a high nutritional value, especially when fresh, frozen, steamed, or quickly boiled.Although spinach is touted as being high in iron and calcium content, and is often served and consumed in its raw form, raw spinach contains high levels of oxalates, which block absorption of calcium and iron in the stomach and small intestine.Spinach cooked in several changes of water has much lower levels of oxalates and is better digested and its nutrients absorbed more completely.[7][8] In addition to preventing absorption and use, high levels of oxalates remove iron from the body.While refrigeration slows this effect to about eight days, fresh spinach loses most of its folate and carotenoid content over this period of time.The Food and Drug Administration approves of irradiation of spinach leaves up to 4.0 kilograys, having no or only a minor effect on nutrient content.Spinach became a popular vegetable in the Arab Mediterranean and arrived in Spain by the latter part of the 12th century, where Ibn al-ʻAwwām called it raʼīs al-buqūl, 'the chieftain of leafy greens'.[14][18] During World War I, wine fortified with spinach juice was given to injured French soldiers with the intent to curtail their bleeding.The comics and cartoon character Popeye the Sailor Man has been portrayed since 1931 as having a strong affinity for spinach, particularly the canned variety. .

Bolting in Garden Vegetables – West Coast Seeds

Growth really kicks in for vine-forming plants, while other leafy greens suddenly go to seed.A large number of common garden vegetables are grown in spring (and again in the fall), when the soil is cool, before the long days of summer have arrived.These vegetables are grown for their edible leaves — as opposed to many of the summer-harvest crops that we grow for their roots or fruits.Lettuce, spinach, pac choi, arugula, mustard greens, and chicory are all included.As the days get longer and the average soil temperature increases (becoming quite hot at mid-day), these plants bolt, or “run to seed.” These odd phrases describe the speed with which some plants can produce a flower stem, go into bloom, and then produce seeds.Some plants can produce a flower stalk that grows several inches per day.A gardener might interpret plants bolting as a signal to put leafy vegetable production on hold for the summer and focus instead on all those other, heat-loving crops, from turnips to tomatoes.Plants in the carrot family tend to develop long, tapered, carrot-like tap roots.It’s tempting to think of a head of broccoli as being frozen in time somehow, since the ones we buy at the supermarket appear to be inanimate.But when there’s broccoli growing in the garden, the plant fully intends on making flowers and seeds — so when it’s ready, it must be harvested. .

Malabar spinach, Basella alba – Wisconsin Horticulture

This tender perennial native to tropical Asia, likely India and Sri Lanka or Indonesia (hardy only to zone 10), is easily grown as an annual during the heat of summer.This fast-growing plant is a soft-stemmed, twining vine that can grow up to 10 feet long as an annual (longer as a perennial) but generally remains smaller in most gardens.The edible leaves (and shoots) of Basella alba resemble spinach with a mild, slightly peppery flavor with a hint of citrus and are used in the same way.The young leaves can be eaten raw mixed in a green salad, and steamed or boiled to be used like cooked spinach.The inconspicuous white or pink elongated, globular, fleshy flowers are produced in short spikes in the leaf axils.Try combining the vine spinach with dark-leaved basil or beets, Swiss chard with pink or red petioles, and blue-leaved kale for a dramatic edible planting.Mechanical scarification to open the tough seed coat (such as with a file, sharp knife or sandpaper) will hasten germination, as will soaking them in water overnight before planting. .

How to Prevent Bolting in Vegetable Crops

And it's sneaky too, seemingly running to seed within a matter of days; how many times have you gone away for the weekend only to return to drawn out plants teetering like the salad equivalent of the Leaning Tower of Pisa?German scientists confirmed a link between increasing day length and the switch from leaf production to flowering as early as 1931.A sudden cold snap in spring can signal to biennials (plants such as onions and carrots that complete their lifecycle over two years) that winter has been and gone and now's the time to prepare the seeds for the next season.Use bolt-resistant varieties for the earliest sowings of annual vegetables that respond to increasing day length: spinach, lettuce, beetroot, rocket etc.Time sowings: Biennial vegetables sensitive to cold snaps can also be started off within a greenhouse before planting out under cloches once the weather has improved.For annual vegetables, don't forget to sow little and often to ensure a steady supply of quick-growers such as lettuces - this way you can pick leaves in good time, before they become too old and more likely to bolt.Oriental leaves such as pak choi and mustards are best sown a couple of weeks after the summer solstice, once day lengths are visibly beginning to shorten.Shade cool-season crops: Relentlessly hot, dry summers are rare where I live - for me it's more about maximising light levels and willing plants such as tomatoes to produce their fruits before the nights turn cold!Every gardener should aim for this ideal, but particularly those growing in hotter climates where there's a race to get in leafier salads and vegetables before the hottest months hamper progress.Think of it as an added feast for them and a floriferous touch of beauty for you: sprays of yellow blooms courtesy of brassicas; bobbing globes of alliums; or a lace-like carrot umbel as dreamy as anything in the flower border. .

How to Stop Lettuce From Bolting

Many of these seeds will have names that hint at their bolt resistance, like "Slobolt" and "Summer Bibb.".It's a good idea to test with a soil thermometer to be sure you've achieved the correct temperature for your seeds to sprout.Row covers also protect greens and cold-season crops from pests such as cabbage loopers and rabbits.You will need to provide supports along with the cover to keep the cloth elevated above the plants and giving them room to grow. .

Why is my spinach flowering and how can I prevent it?

Something you can try is to locate your spinach (and other cool-weather crops) in a microcliimate where it stays cooler: perhaps where there's shade from the midday sun, a low area that cools off quickly at night, or near water that helps to moderate the temperature. .

Bolting in vegetables / RHS Gardening

In annual crops, bolting occurs before they are ready to gather and, in biennials, when an over-wintering organ (carrot roots for example) flowers before the winter.This is due to unsettled weather conditions early in the season and usually occurs after a prolonged cold spell, often during the propagation phase. .


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