Wheatgrass has been a fixture of juice bars and health food stores since the 1970s, and the claims surrounding it range from reasonable to wildly overstated. I have grown wheatgrass for years — both for personal use and as part of our tray rotation at Wholly Water Farms. It is genuinely nutritious. It is also not a miracle cure for anything. Both of those statements can be true at the same time, and understanding the difference matters if you are going to invest the effort of growing it at home.

Here is how to do it right, and what the research actually says about what you are putting in your body.

What Do You Need to Grow Wheatgrass at Home?

Growing wheatgrass requires minimal equipment, minimal space, and about ten days of patience. Here is your supply list:

Hard red winter wheat berries: Buy organic, untreated seed. Look for a deep golden color. You need about 1.5 to 2 cups of seed per standard 10x20-inch tray. Grocery store wheat berries work, but seed-grade from garden suppliers gives better germination rates.
Growing tray: A standard 10x20-inch nursery flat works. You can also use repurposed takeout containers, baking sheets, or any shallow tray with drainage holes.
Growing medium: About one inch of organic potting mix, seed-starting mix, or coconut coir. Garden soil is not appropriate — it compacts too much and may carry pathogens.
Spray bottle: For misting. Wheatgrass does not want to be drenched. It wants to be consistently moist.
Indirect light: A bright windowsill or a spot under grow lights. Direct sunlight is too intense and dries the tray out fast.

How Do You Grow Wheatgrass Step by Step?

The process is simple but benefits from precision at each stage. Here is the method we use and teach.

Step 1: Soak the wheat berries. Place 1.5 to 2 cups of wheat berries in a jar or bowl, cover with 2 to 3 inches of cool water, and soak for 8 to 12 hours. Overnight works perfectly. This activates germination enzymes and softens the seed coat. Drain and rinse after soaking.

Step 2: Pre-sprout (optional but recommended). After draining, spread the soaked berries in a single layer on a plate or in a colander. Rinse twice daily for 1 to 2 days until you see tiny white root tips emerging. This step is not strictly necessary, but pre-sprouted seeds establish faster and more uniformly on the tray.

Step 3: Prepare the tray. Fill your tray with about one inch of moistened growing medium. Level it evenly. The medium should be damp but not waterlogged — squeeze a handful and you should get a drop or two of water, not a stream.

Step 4: Spread the seeds. Distribute the soaked (or pre-sprouted) berries evenly across the surface in a dense single layer. Seeds can touch but should not pile up. Overcrowding causes mold problems and poor air circulation.

Step 5: Cover and blackout. Mist the seeds lightly, then cover the tray with another inverted tray or a damp towel. Keep in a dark or dimly lit location at room temperature (60 to 75 degrees Fahrenheit) for 3 to 4 days. Mist once or twice daily to keep the surface moist. Remove the cover once sprouts reach about one inch tall.

Step 6: Move to light. Uncover the tray and place it where it receives bright, indirect light. Avoid direct afternoon sun. Continue misting once or twice daily. The grass will be pale yellow at first and will green up within 24 to 48 hours of light exposure as chlorophyll production kicks in.

Step 7: Harvest. Wheatgrass is ready to harvest when it reaches 6 to 8 inches tall, typically on days 7 to 10. Cut with sharp scissors or a clean knife just above the soil line. Use immediately for the best flavor and nutrient content, or store in a sealed bag in the refrigerator for up to a week.

For a broader look at growing greens in trays, our microgreens growing guide covers similar techniques that apply to wheatgrass as well.

How Do You Juice Wheatgrass?

This is where many first-time growers hit a wall. You cannot use a standard blender or centrifugal juicer for wheatgrass. The fibrous blades are indigestible — human stomachs lack the enzymes to break down cellulose — and a regular blender will give you a chunky, fibrous mess that is unpleasant to drink and hard to digest.

You need a masticating (slow) juicer. These use an auger mechanism that crushes and presses the grass rather than spinning it, extracting the liquid while separating the pulp. A manual wheatgrass juicer costs $30 to $60 and works well for small quantities. Electric masticating juicers run $80 to $300 and handle larger volumes. One 10x20-inch tray yields roughly 8 to 12 ounces of juice, depending on how thick the grass grew.

The flavor is intensely green and grassy — some people love it, others find it challenging. Mixing wheatgrass juice with apple juice, lemon, or ginger makes it more palatable without significantly diluting the nutrients.

What Is Wheatgrass Actually Good For?

Here is where I want to be honest, because the wheatgrass community has a history of making claims that outpace the evidence. Ann Wigmore, who founded the Hippocrates Health Institute in Boston in 1963 and authored over 35 books on living foods, was the primary force behind wheatgrass's rise in popularity. She believed wheatgrass juice could treat serious diseases. The enthusiasm she generated was genuine, but many of her claims were not supported by controlled clinical trials.

Here is what the science does support:

Chlorophyll is real and present. Wheatgrass is approximately 70 percent chlorophyll by dry weight. Chlorophyll has demonstrated antioxidant properties in laboratory studies. However, the popular claim that chlorophyll is "almost identical to hemoglobin" and can therefore boost blood oxygen levels is misleading — the molecular similarity exists, but your body does not convert chlorophyll into hemoglobin.
B vitamins are present. Wheatgrass contains measurable amounts of B vitamins, including thiamin, riboflavin, and B6. It also provides vitamins A, C, E, and K, plus minerals including iron, calcium, and magnesium.
Antioxidant activity is documented. Multiple laboratory studies confirm that wheatgrass extracts demonstrate antioxidant and anti-inflammatory properties. A study published in the Journal of Clinical and Diagnostic Research found that wheatgrass juice significantly reduced oxidative stress markers.

What the science does not support:

Detoxification claims are weak. The idea that wheatgrass "detoxifies" the body is not backed by strong evidence in human studies. Memorial Sloan Kettering Cancer Center's assessment states plainly that claims about wheatgrass detoxification and chlorophyll augmenting hemoglobin production are not supported by scientific evidence. Animal studies show some hepatoprotective effects, but that is a long way from the sweeping detox claims made by many advocates.
Cancer treatment claims are unproven. While some in vitro (cell culture) studies show anti-cancer properties, no clinical trials have demonstrated that wheatgrass treats or prevents cancer in humans.

My take after years of growing and consuming wheatgrass: it is a genuinely nutritious green juice that fits well into a varied diet. It is not a replacement for medical care, and it is not a miracle food. Drink it because you like it and because it adds vitamins and antioxidants to your day, not because you think it will cure anything.

Frequently Asked Questions

How long does it take to grow wheatgrass at home?

Wheatgrass takes 7 to 10 days from soak to harvest. Soak hard red winter wheat berries for 8 to 12 hours, optionally pre-sprout for 1 to 2 days, then grow on a tray with about an inch of growing medium. Harvest at 6 to 8 inches tall. One 10x20-inch tray produces approximately 8 to 12 ounces of juice.

Can you juice wheatgrass in a regular blender?

No. Wheatgrass fibers are indigestible cellulose that a standard blender cannot properly break down. You need a masticating (slow) juicer that crushes and presses the grass to extract the juice while separating the fibrous pulp. Manual wheatgrass juicers cost $30 to $60 and work well for home use.

Is wheatgrass gluten free?

Pure wheatgrass juice harvested before the jointing stage (when the grass is 6 to 8 inches tall) is generally considered gluten free because the gluten protein has not yet formed in the young grass blades. However, there is a risk of contamination from ungerminated seeds. People with celiac disease should consult their doctor before consuming wheatgrass.

Does wheatgrass really detoxify your body?

There is no strong evidence from human studies that wheatgrass detoxifies the body. Memorial Sloan Kettering Cancer Center notes that detoxification claims and the idea that chlorophyll augments hemoglobin production are not supported by scientific evidence. Wheatgrass does contain real nutrients and antioxidants, but the detox claims exceed what the research has demonstrated.

Can you regrow wheatgrass after cutting?

Wheatgrass can produce a second cutting, but the regrowth is thinner, less vigorous, and lower in nutrients than the first harvest. Most growers start a fresh tray rather than attempting a second cut. The first harvest captures the plant at its most nutrient-dense stage.