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Coriander (Coriandrum sativum)

Coriander -  Herb

  • Space plants: Thin to 45 cm
  • Harvest in 30-45 days
  • Compatible with (can grow beside): Dill, Chervil, Anise, Cabbages, Carrots
  • Avoid growing close to: Fennel grows to about 60cm. Harvest 30 -45 days. A half-hardy herb with feathery leaves. Grows more reliably from seeds, as coriander is liable to bolt to flower and seed when seedlings are transplanted
  • Coriander is frost tender but it doesn't like extreme heat. So in temperate zones grow coriander during summer, in sub-tropical/tropical zones grow it during the cooler season. It prefers cool weather. It does best at temperatures between 50 and 85°F. It can tolerate temperatures as low as 10°F, but will quickly bolt as temperatures rise past the mid-80s
  • Cilantro likes full sun, but will also do well in light shade, particularly in warmer climates
  • Needs a sunny spot and mulch to prevent drying out. Keep very well watered. If they dry out, then they will bolt to seed. Plant in successions (planting new seed every few weeks) to get a continuous supply

Potential health and medicinal benefits

High blood sugar is a risk factor for type 2 diabetes.Coriander seeds, extract, and oils may all help lower blood sugar. In fact, people who have low blood sugar or take diabetes medication should practice caution with coriander because it’s so effective in lowering blood sugar.Animal studies suggest that coriander seeds reduce blood sugar by promoting enzyme activity that helps remove sugar from the blood.

A study in rats with obesity and high blood sugar found that a single dose (9.1 mg per pound of body weight or 20 mg per kg) of coriander seed extract decreased blood sugar by 4 mmol/L in 6 hours, similar to the effects of the blood sugar medication glibenclamide.A similar study found that the same dosage of coriander seed extract lowered blood sugar and increased insulin release in rats with diabetes, compared with control animals.Coriander may lower blood sugar by activating certain enzymes. In fact, it’s powerful enough that people with low blood sugar should use it cautiously.

Coriander offers several antioxidants, which prevent cellular damage caused by free radicals.Its antioxidants have been shown to fight inflammation in your body.These compounds include terpinene, quercetin, and tocopherols, which may have anticancer, immune-boosting, and neuroprotective effects, according to test-tube and animal studies.One test-tube study found that the antioxidants in coriander seed extract lowered inflammation and slowed the growth of lung, prostate, breast, and colon cancer cells.Coriander is full of antioxidants that demonstrate immune-boosting, anticancer, anti-inflammatory, and neuroprotective effects.

Some animal and test-tube studies suggest that coriander may lower heart disease risk factors, such as high blood pressure and LDL (bad) cholesterol levels.

Coriander extract appears to act as a diuretic, helping your body flush excess sodium and water. This may lower your blood pressure.Some research indicates that coriander may help lower cholesterol as well. One study found that rats given coriander seeds experienced a significant decrease in LDL (bad) cholesterol and an increase in HDL (good) cholesterol.What’s more, many people find that eating pungent herbs and spices like coriander helps them reduce their sodium intake, which may improve heart health.In populations that consume large amounts of coriander, among other spices, rates of heart disease tend to be lower — especially compared with people on a Western diet, which packs more salt and sugar.Coriander may protect your heart by lowering blood pressure and LDL (bad) cholesterol while increasing HDL (good) cholesterol. A spice-rich diet appears to be associated with a lower risk of heart disease.

Many brain ailments, including Parkinson’s, Alzheimer’s, and multiple sclerosis, are associated with inflammation. Coriander’s anti-inflammatory properties may safeguard against these diseases.One rat study found that coriander extract protected against nerve-cell damage following drug-induced seizures, likely due to its antioxidant.A mouse study noted that coriander leaves improved memory, suggesting that the plant may have applications for Alzheimer’s disease.Coriander may also help manage anxiety.Animal studies demonstrate that coriander extract is nearly as effective as Diazepam, a common anxiety medication, at reducing symptoms of this condition.Keep in mind that human research is needed.The antioxidants in coriander may reduce brain inflammation, improve memory, and reduce anxiety symptoms, though more research is needed.

Oil extracted from coriander seeds may accelerate and promote healthy digestion. One 8-week study in 32 people with irritable bowel syndrome (IBS) found that 30 drops of a coriander-containing herbal medication taken thrice daily significantly decreased abdominal pain, bloating, and discomfort, compared with a placebo group.Coriander extract is used as an appetite stimulant in traditional Iranian medicine. One rat study noted that it increased appetite, compared with control rats given water or nothing. Coriander may reduce unpleasant digestive symptoms like bloating and discomfort often experienced by people with IBS. It may also boost appetite among some people.

Coriander contains antimicrobial compounds that may help fight certain infections and foodborne illnesses.Dodecenal, a compound in coriander, may fight bacteria like Salmonella, which can cause life-threatening food poisoning and affect 1.2 million people annually in the United States.Additionally, one test-tube study revealed that coriander seeds are among several Indian spices that can fight the bacteria responsible for urinary tract infections (UTIs).Other studies suggest that coriander oil should be used in antibacterial formulations due to its ability to fight foodborne illnesses and hospital-acquired infections. Coriander exhibits antimicrobial effects that may help fight foodborne illnesses and pathogens like Salmonella.

Coriander may have several skin benefits, including for mild rashes like dermatitis.In one study, its extract failed to treat diaper rash in infants on its own but could be used alongside other soothing compounds as an alternative treatment Other studies note that the antioxidants in coriander extract may help prevent cellular damage that can lead to accelerated skin aging, as well as skin damage from ultraviolet B radiation.Furthermore, many people utilize coriander leaf juice for skin conditions like acne, pigmentation, oiliness, or dryness. Nonetheless, research on these uses is lacking.

If you are going to use Coriander to treat an existing health condition please consult with your healthcare provider first.