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What Wheatgrass Is and How It Grows

Wheatgrass is the young grass that grows from wheat seeds before the wheat plant develops grain. It typically reaches a height of 6 to 8 inches before harvesting. Many people recognize it as the bright green grass used in juices, powders, and nutritional supplements. The plant grows quickly—usually ready to harvest within 7 to 10 days of planting—which is why it has become popular in health food stores and juice bars across the country.

The plant grows in soil or water using hydroponic systems. Hydroponic growing means the wheatgrass roots sit in nutrient-rich water rather than soil. This method allows farmers to grow large quantities indoors in a small space. Commercial growers typically harvest the grass by cutting it at the base, just above the root system. A single wheatgrass plant can be harvested once before replanting is necessary.

Wheatgrass contains vitamins, minerals, amino acids, and other compounds. According to research published in the journal Molecules in 2015, wheatgrass contains approximately 17 amino acids, including all nine essential amino acids your body cannot make on its own. The grass also contains chlorophyll, the compound that makes plants green. One ounce of wheatgrass juice contains about 1 gram of protein and varying amounts of vitamins A, C, and E, along with minerals like iron, calcium, and magnesium.

Understanding what wheatgrass actually is helps people make informed decisions about whether to try it. The plant itself is simple—just young wheat, harvested early in its growth cycle. This basic nature is why some people view it as a straightforward nutritional source. Takeaway: Wheatgrass is an easily grown plant with a short harvest timeline and contains measurable amounts of vitamins, minerals, and amino acids worth learning more about.

Claimed Health Benefits and Scientific Evidence

People who use wheatgrass make various claims about its effects on health. These claimed benefits include increased energy, improved digestion, reduced inflammation, support for immune function, and clearer skin. Some individuals report feeling more alert and having better focus after consuming wheatgrass juice. Others mention that their digestive discomfort decreased. However, the scientific support for these claims varies significantly, and much more research is needed to confirm whether these effects truly come from wheatgrass or from other factors.

A 2015 review of wheatgrass research published in Molecules examined multiple studies. The researchers found that wheatgrass showed potential in laboratory and animal studies, but human studies were limited and often involved small groups of people. The review noted that wheatgrass contains compounds with antioxidant and anti-inflammatory properties in test-tube settings, but translating these findings to real human bodies remains unclear. Several studies lasted only a few weeks, which is a short timeframe for evaluating long-term health effects.

One frequently cited human study from 2004 involved patients with rheumatoid arthritis who took wheatgrass for 3 months. Researchers reported that those who consumed wheatgrass showed some reduction in joint swelling and pain compared to a control group. However, this study included only 18 participants, considered a small sample size. A 2013 study in the journal Nutrition & Metabolism looked at 25 overweight adults and found that wheatgrass juice did not significantly affect their weight, though some participants reported feeling fuller after drinking it.

The reality is that wheatgrass research is still developing. While laboratory studies show that certain compounds in wheatgrass have antioxidant properties, whether these benefits transfer to humans who drink wheatgrass juice or take wheatgrass powder remains largely unproven. Most major health organizations, including the National Institutes of Health, classify wheatgrass as an unproven supplement requiring more research. Takeaway: Claims about wheatgrass benefits range widely, but scientific evidence for most claims is limited, and many studies involve very small groups of people over short time periods.

Forms of Wheatgrass and How People Use It

Wheatgrass comes in multiple forms, allowing people to choose how they want to consume it. Fresh wheatgrass juice is the most common form. Fresh juice is made by pressing or blending freshly harvested wheatgrass and straining the liquid. A typical serving is 1 to 2 ounces. Many juice bars and health food stores offer fresh wheatgrass shots—small drinks served in shot glasses. Fresh juice starts losing nutrients quickly after extraction, which is why many enthusiasts prefer consuming it immediately after preparation.

Wheatgrass powder is another popular option. Manufacturers freeze-dry fresh wheatgrass and grind it into a powder. Powder lasts much longer than fresh juice—typically 12 to 18 months when stored in a cool, dry place. One teaspoon of powder roughly equals one ounce of fresh juice in terms of concentrated nutrients, though exact equivalencies depend on how densely the powder is packed. People mix powder into smoothies, water, juice, or yogurt. Powder is more convenient for people who want to use wheatgrass regularly without visiting juice bars.

Wheatgrass tablets and capsules exist as well, though they are less common than juice and powder. These forms offer maximum convenience for people wanting wheatgrass in their daily routine without taste considerations. Capsules typically contain between 250 and 500 milligrams of wheatgrass per capsule. A person taking capsules would need to consume 6 to 12 capsules to equal the amount in a single 1-ounce wheatgrass juice serving.

Wheatgrass also comes in topical forms like creams and ointments, though research on skin application is extremely limited. Some people grow wheatgrass at home and juice it fresh, while others purchase it pre-made from retailers. Prices vary: fresh wheatgrass juice shots typically cost $3 to $8 per ounce at juice bars, while wheatgrass powder costs $15 to $30 per container and lasts several weeks to months depending on serving size. Takeaway: Wheatgrass availability in multiple forms—fresh juice, powder, capsules, and topical products—allows people to choose consumption methods that fit their lifestyle and preferences.

Potential Side Effects and Safety Considerations

Most people tolerate wheatgrass without serious problems, but some individuals do experience side effects. The most commonly reported side effects are mild and temporary. These include nausea, appetite suppression, dizziness, and mild headaches. These effects typically occur shortly after consuming wheatgrass and usually resolve within 24 to 48 hours. Some people describe an unpleasant taste and throat irritation from drinking fresh wheatgrass juice. Constipation and mild stomach upset have also been reported by some users.

People with celiac disease or non-celiac gluten sensitivity face a particular consideration. Wheat seeds themselves contain gluten, but wheatgrass is harvested before the grain develops. During the early growth phase, the grass portion typically contains very little gluten. However, contamination during harvesting and processing is possible if equipment touches the wheat grain or roots. The Academy of Nutrition and Dietetics notes that people with celiac disease should consult their healthcare provider before consuming wheatgrass, as trace amounts could cause problems for highly sensitive individuals.

Wheatgrass may interact with certain medications. Because wheatgrass contains vitamin K, which plays a role in blood clotting, people taking blood-thinning medications like warfarin (Coumadin) should discuss wheatgrass consumption with their doctor. Consuming large amounts of vitamin K from wheatgrass could interfere with these medications' effectiveness. Additionally, wheatgrass might lower blood sugar levels, so people taking diabetes medications should monitor their blood sugar carefully if they start consuming wheatgrass regularly.

Allergic reactions to wheatgrass are rare but possible. Symptoms could include itching, swelling, or difficulty breathing. People allergic to wheat or grasses should be particularly cautious. Pregnant and breastfeeding women should consult their healthcare providers before using wheatgrass, as research on safety during these periods is limited. People with compromised immune systems should also seek medical guidance before starting wheatgrass, as some research suggests it may stimulate immune activity. Takeaway: While wheatgrass is generally well-tolerated, certain people—including those on blood thinners, with celiac disease, or with grass allergies