Microgreens farming is the practice of growing young vegetable, herb, and flower seedlings indoors and harvesting them just 5 to 14 days after planting, when the plants are only 1 to 3 inches tall. It’s a fast-turnaround, space-efficient form of agriculture that can operate on a kitchen counter or scale up to a commercial warehouse. The global microgreens market hit an estimated $3.75 billion in 2026 and is projected to reach $7.44 billion by 2032, growing at about 12% per year.
What Microgreens Actually Are
Microgreens are seedlings harvested at a very specific stage: after the first set of seed leaves (called cotyledons) have opened, and sometimes after the first true leaves appear. You cut the tiny plant at its base, just above the soil or growing mat, and eat only the stem and leaves. This is what separates them from sprouts, where you eat the entire plant including the root and often the seed itself. It also distinguishes them from baby greens, which are allowed to grow several more weeks before harvest.
The appeal goes beyond their size. Microgreens pack concentrated nutrition. They contain 4 to 40 times higher levels of carotenoids (pigments your body converts to vitamin A and uses as antioxidants) than the same plants grown to maturity. Broccoli microgreens, for example, contain levels of a cancer-studied compound called glucoraphanin that are comparable to broccoli sprouts, roughly 13 micromoles per gram, and those levels stay stable for at least six days in cold storage. In general, microgreens deliver more vitamins, minerals, and antioxidants per gram than their fully grown counterparts.
Popular Varieties and Their Harvest Windows
One of the reasons microgreens farming works as a business is the speed. Different varieties are ready to cut in as little as five days or as many as two weeks. Here are some of the most commonly grown:
- Radish (5–7 days): Vibrant red stems with green leaves. Spicy and crisp, one of the fastest to harvest.
- Arugula (5–7 days): Small green leaves with a nutty, peppery flavor.
- Sunflower (7–10 days): Large, crunchy greens with a nutty taste. A customer favorite for salads.
- Broccoli (8–10 days): Green leaves with a mild, earthy flavor. Popular for its nutritional profile.
- Kale (7–10 days): Curly green leaves, mild and slightly peppery.
- Watercress (7–10 days): Small leaves with a peppery, tangy kick.
- Beet greens (10–12 days): Deep red stems with green leaves. Sweet and earthy.
- Carrot (10–14 days): Delicate green tops with a sweet, mild flavor. Among the slowest to mature.
- Borage (8–12 days): Green leaves with a fresh, cucumber-like taste.
Most growers cultivate several varieties at once, staggering planting schedules so they always have trays reaching harvest. A single shelf can cycle through dozens of crops per year because each tray turns over in under two weeks.
How Microgreens Are Grown
The basic process is the same regardless of scale: spread seeds densely across a tray, keep them moist and warm in the dark for a few days to trigger germination, then expose them to light until harvest. The differences come down to what’s in the tray.
Soil-Based Growing
Most beginners and many commercial growers use a shallow layer of potting mix or coconut coir in standard 10×20-inch nursery trays. Soil is cheaper, requires no added nutrients (the seed contains everything the plant needs for its short life), and generally produces slightly higher yields. The downsides are the mess, the daily watering, and the need for sterile media to avoid mold or fungus gnats.
Hydroponic Growing
Hydroponic setups skip granular growing media entirely. Seeds sit on thin mats made from hemp, bamboo, or jute fiber that hold moisture and give roots something to grip. Some systems circulate nutrient-enriched water beneath the mats, though many microgreen growers find plain water is sufficient given the short growth cycle. Hydroponic trays are lighter, cleaner, and easier to stack in vertical racks, which makes them popular in urban farming operations where floor space is expensive. The tradeoff is more upfront cost for mats and sometimes lower yields compared to soil.
Vertical Farming Setups
Whether using soil or hydroponic mats, most commercial microgreen farms go vertical. Metal shelving units fitted with LED grow lights on each tier allow a single room to hold hundreds of trays. This is where the environmental math gets striking: one study found that microgreens production uses 158 to 236 times less water than growing the same vegetable to full maturity in a field, while delivering equivalent nutritional value. The combination of efficient land use, minimal water, and short growing cycles makes indoor microgreen farming one of the lowest-footprint forms of food production available.
Starting a Microgreens Farm
The barrier to entry is low compared to almost any other type of farming. A home-scale setup needs trays, growing media, seeds, a spray bottle, and a light source. Many people start on a single wire rack in a spare room. Commercial operations add climate control, automated watering, and food-safe harvesting and packaging areas, but even a full production setup can fit inside a spare bedroom or garage.
The economics are appealing because the crop cycle is so fast. A tray of radish microgreens planted on Monday can be harvested and sold by Sunday. At farmers’ markets and to restaurants, microgreens commonly sell for $25 to $50 per pound, though prices vary by variety and region. The cost of seeds and media per tray is typically a few dollars, so margins can be significant once you have consistent buyers. The challenge is volume: each tray produces a relatively small amount, so profitability depends on running many trays simultaneously and selling everything before it wilts.
Food Safety Considerations
Microgreens occupy a different regulatory space than sprouts, which matters if you plan to sell them. The FDA’s Produce Safety Rule under FSMA imposes strict requirements on sprout producers, including mandatory pathogen testing of irrigation water for every production batch, environmental testing for Listeria, and a prohibition on shipping until test results come back negative. These rules exist because sprouts grow in warm, moist conditions that are ideal for bacterial growth, and sprout-related outbreaks caused over 2,400 illnesses between 1996 and 2014.
Microgreens are not classified as sprouts under federal rules. They grow in open air with light exposure, the roots stay in the media rather than being eaten, and the growing conditions are less hospitable to pathogens. That said, any farm using soil amendments like compost or manure must meet microbial standards limiting bacteria including Salmonella, E. coli O157:H7, and Listeria. Farms selling less than $25,000 in produce annually are generally exempt from the FSMA Produce Safety Rule, though they still need to display the farm’s name and address at the point of sale.
For practical purposes, the biggest food safety risks in microgreens farming are contaminated seeds, unsterile growing media, and poor handling after harvest. Using food-grade seeds from reputable suppliers, keeping growing areas clean, and refrigerating harvested greens promptly address most of these risks.
Why the Market Is Growing
Several factors are driving the 12% annual growth rate in this market. Restaurants use microgreens for both flavor and presentation. Health-conscious consumers are drawn to the concentrated nutrient profiles. And the farming model itself fits neatly into urban environments where traditional agriculture is impossible. A microgreens operation can run year-round in any climate, requires no outdoor land, and produces food within walking distance of the people eating it. That local production loop cuts transportation emissions and gets fresher product to the consumer, since microgreens are highly perishable and lose quality within a week of harvest.
The short cycle time also makes microgreens farming a realistic side business. Unlike field crops that tie up land for months, or livestock operations that require years of infrastructure, a microgreens farm can go from first seed to first sale in under two weeks.