Broccoli Microgreens Nutrition: Vitamins, Minerals, and the Full Data

My wife’s best friend, Claudette, overhauled her diet a few years back, and that’s the first time I heard anyone talk about sulforaphane. I went looking for where that compound actually starts, and the trail led to a tray of seedlings on my own counter. Broccoli microgreens nutrition turned out to be a better story than the headlines tell, and a more honest one.

Here is the short version. A broccoli microgreen is cut 7 to 11 days after sowing, at the cotyledon stage, before the plant shifts energy into structural growth. What it carries has now been measured by laboratories on three continents, and in 2023 a research team fed a weighed serving to eleven people and tracked the famous compound all the way through. This post gives you the measured record, including the parts that do not flatter the crop.

Below: what the data shows, how the numbers break down, what the research does and does not support, and how the seedling stacks up against the crown it would have become.

What are broccoli microgreens and when are they harvested?

The video above is the whole lifespan of the crop this post measures: ten days, dry seed to cutting board. Watch it once and every number below has a picture attached.

Broccoli microgreens are the seedling stage of the same plant that grows the broccoli crown in your produce aisle. The seed germinates, pushes up a thin stem, opens two heart-shaped seed leaves, and that is what you eat: leaf and stem, cut above the tray, no root and no seed coat.

Across the published trials, harvest ran 7 to 11 days after sowing. The window closes when the first true leaf shows its toothed edge, because past that point the plant is spending its reserves on structure. Broccoli microgreens nutrition is a story about that specific moment: a plant still running on what the seed banked, measured before it has built anything else.

They are not sprouts. A sprout is eaten at three to five days, seed and all, grown in the dark. That difference matters for the numbers, and we will come back to it.

What does the nutrition data show for broccoli microgreens?

The honest answer about broccoli microgreens nutrition starts with a warning no other site will give you: the numbers depend on the growing system, and they move further than you would guess. So the table below names its sources, and every value belongs to the study listed, not to broccoli in general.

Values vary by cultivar, growing system, and harvest day. No published table reports broccoli microgreen vitamin E, vitamin K, vitamin A as RAE, folate, B vitamins, fiber, or calories directly; anything you see quoting those is borrowing, usually from the mature crown’s record.

How do the macro and micro nutrients break down?

Potassium leads, as it does in nearly every leafy green, with calcium, phosphorus, magnesium and sodium behind it. In the survey those minerals come from, broccoli sat mid-pack among thirty Brassica-family microgreens, with its calcium sixth of the thirty (Xiao et al., 2016).

Here is the part that matters more than any single number in broccoli microgreens nutrition: iron measured 0.34, 0.67 and 2.61 mg per 100 g in three published trials of the same crop. Same species, same organ, same units, an eightfold spread. The difference was the growing system: bare felt mats with no added micronutrients, commercial peat greenhouse production, and fed peat in a growth chamber (Di Gioia et al., 2023; Xiao et al., 2016; Balik et al., 2025). A mineral number without its growing conditions is a guess wearing a lab coat.

One mineral does deserve its own sentence. In the largest side-by-side trial ever run, seventeen species on identical mats, broccoli placed fourth on sulfur, and the three species above it are all cabbage-family cousins (Di Gioia et al., 2023). Sulfur is the raw material of the glucosinolates, the compound family this plant is famous for.

What does the research say about broccoli microgreens?

More about broccoli microgreens nutrition than it did a few years ago, and the newest piece is the one that matters. In 2023, researchers at Oregon State University fed eleven healthy adults a single 16 gram serving of fresh broccoli microgreens and tracked sulforaphane’s metabolites through their urine. The compound arrived in every one of the eleven, peaking three to six hours after eating, and the serving’s glucoraphanin held its level through six days in a fridge before it was eaten (Bouranis et al., 2023). That is an absorption study, not a benefit study. It shows the compound gets in; it does not show what it does for your health.

The blood-sugar and weight-loss headlines you may have seen trace to two studies done in mice, one with broccoli microgreen juice, one with freeze-dried powder (Li et al., 2021; Ma et al., 2022). Real research, wrong species for a promise. Nobody has fed broccoli microgreens to people and measured a health outcome, and this post will not pretend otherwise.

There is also a laboratory digestion study worth knowing about. When broccoli microgreens went through a simulated gut, about a third of their isothiocyanates and 70% of their polyphenols reached the absorbable fraction, while vitamin C fared worst of the four microgreens tested (de la Fuente et al., 2019). A dish is not a person, but it is a reminder that what sits in the leaf and what your body meets are different questions.

How do broccoli microgreens compare to mature broccoli?

Honestly, and against the internet’s favorite story: it depends on the nutrient, and the famous one goes the wrong way. In all three laboratories that have measured broccoli microgreen vitamin C, the seedling came in below the mature crown’s own USDA record, 49 to 79 mg per 100 g against 91.3. On the vitamin broccoli is famous for, gram for gram, the grown-up crop has never once been measured losing to its seedling.

The rest of the broccoli microgreens nutrition comparison splits by growing system. The commercial survey’s broccoli microgreens carried about twice the calcium and magnesium of the USDA mature record, while a hydroponic experiment grew microgreens that came in below the mature vegetable on potassium, calcium, sodium and iron from the same seed variety (Xiao et al., 2016; Weber, 2017). Both results are real. The tray is a mirror of what you feed it.

And the sulforaphane question deserves its honest sentence: the ten-times and forty-times figures in circulation compare broccoli sprouts to mature broccoli heads, not microgreens to anything. The one measured microgreen value, about 13 µmol of glucoraphanin per gram, is a level its own study calls similar in range to reported sprout values (Bouranis et al., 2023). Similar in range. Not a multiplier.

What do broccoli microgreens taste like?

Broccoli with the volume turned down. Mild, green, a whisper of the family’s pepper, and none of the sulfur punch of the cooked crown. If radish microgreens argue with a dish, broccoli microgreens agree with it, which is why they disappear into eggs, sandwiches and grain bowls so easily. The stems are thin and juicy, often blushed purple, and the whole seedling is tender enough to eat without a second thought.

How do you use broccoli microgreens in meals?

Raw, and last. Over eggs just off the heat, into a sandwich, onto soup at the table, through a grain bowl, on flatbread once it has stopped steaming. Nothing about this leaf improves in a pan, and no study has measured what cooking does to broccoli microgreens nutrition, so treat them as a finishing ingredient and the question never comes up.

A real serving is smaller than the tables imply. Nutrition figures are published per 100 grams, and nobody eats 100 grams of microgreens in a sitting. At a generous 20 gram handful, the measured vitamin C works out to 11 to 18 percent of the Daily Value, a good source in the language regulators use, not a high-in. Publish-the-serving honesty is rare in this niche; it is also why you can trust the rest of this page.

Where can I buy broccoli microgreens?

Farmers markets, CSA boxes, and increasingly the refrigerated shelf of larger grocers. Expect to pay for the labor: one seedling weighs about 65 milligrams, so the handful on your sandwich is roughly three hundred of them, each sown, watered and cut by hand inside two weeks (Di Gioia et al., 2023). Growing your own is the cheapest steady supply, and broccoli is one of the easiest crops to start with: in the big seventeen-species trial its tray yield placed fourth, ready in eleven days. If you would rather start with everything in one box, the Back to the Roots starter kit has what you need.

If you sell them, or you are thinking about it, broccoli microgreens nutrition data like this is the beginning of a different conversation, and that conversation is what the Variety Library was built for.

Wrap-up: broccoli microgreens nutrition

Broccoli microgreens nutrition comes down to this: a fast, mild, honest vegetable with measurable vitamin C at a good-source level per real serving, the family’s sulfur chemistry with a genuine human absorption record behind its famous precursor, and minerals that mirror the growing system. They are not a supplement and they do not beat the crown at everything; on vitamin C the crown wins. They are an easy, high-quality addition to a varied diet, cut days before you eat them.

Broccoli is Guide No. 01 in the Variety Library, where every crop gets this same standard of evidence: measured record, statistical letters, and the gaps named as plainly as the findings. If this page changed how you read a nutrition claim, the Variety Library is where that standard lives.

Broccoli microgreens nutrition: frequently asked questions

Do you need to wash broccoli microgreens before you eat them?

A gentle rinse is fine, and drying them properly matters more than the rinse itself. Water sitting on the leaf is what turns a good bag slimy, so if you wash them, spin or blot them dry and eat them soon after. Buying them cold and getting them home cold does more for both safety and texture than any amount of rinsing.

How long do broccoli microgreens keep after harvest?

Nobody has published a shelf-life score for this crop, so treat any confident number you see with suspicion. The one storage measurement that exists tracked the glucoraphanin rather than the eating quality, and those are two different clocks (Bouranis et al., 2023). Plan on a few days, keep the bag cold and dry, and trust your own eyes over anyone’s chart.

Can you freeze broccoli microgreens?

You can, but you will not want to look at the result. At roughly 94 percent water, ice crystals rupture the leaf and it thaws limp. Freezing suits smoothie packs and purées, not anything going on a plate, and freezing has never been tested against these compounds.

Do broccoli microgreens grow back after you cut them?

No. The cut takes the stem above the growing point, and a brassica seedling has no reserve left to push a second flush. One sowing, one harvest, then the mat goes to the compost and you start again. Anyone selling you a regrowing microgreen is selling you something else.

Do broccoli microgreens contain nitrates?

Some, and less than the leafy crops that earn the nitrate headlines. One six-species trial measured broccoli microgreens at about 149 mg per kilogram fresh, well under the red beet grown beside them, though that trial’s own margin of error was wide enough that it could not rank the species with confidence (Balik et al., 2025). The bigger seventeen-species trial published its nitrate result as a figure with no number printed, so there is no second value to check it against.

Is it safe to eat broccoli microgreens every day?

For most people, yes, treated like any fresh produce: bought cold, kept cold, eaten within days. The published safety reviews put microgreens at lower risk than sprouts, though no fresh food is risk-proof (Riggio et al., 2019). If you have a specific dietary restriction or take medication that interacts with leafy greens, that conversation belongs with your clinician rather than a blog post.

This information is educational and is not a substitute for professional medical advice. Talk with your physician before making significant changes to your diet or before using microgreens to address a health concern.

References

Balik, S., Elgudayem, F., Dasgan, H. Y., Kafkas, N. E., & Gruda, N. S. (2025). Nutritional quality profiles of six microgreens. Scientific Reports, 15, 6213. https://doi.org/10.1038/s41598-025-85860-z

Bouranis, J. A., Wong, C. P., Beaver, L. M., Uesugi, S. L., Papenhausen, E. M., Choi, J., Davis, E. W., II, Da Silva, A. N., Kalengamaliro, N., Chaudhary, R., Kharofa, J., Takiar, V., Herzog, T. J., Barrett, W., & Ho, E. (2023). Sulforaphane bioavailability in healthy subjects fed a single serving of fresh broccoli microgreens. Foods, 12(20), 3784. https://doi.org/10.3390/foods12203784

de la Fuente, B., López-García, G., Máñez, V., Alegría, A., Barberá, R., & Cilla, A. (2019). Evaluation of the bioaccessibility of antioxidant bioactive compounds and minerals of four genotypes of Brassicaceae microgreens. Foods, 8(7), 250. https://doi.org/10.3390/foods8070250

de la Fuente, B., López-García, G., Máñez, V., Alegría, A., Barberá, R., & Cilla, A. (2020). Antiproliferative effect of bioaccessible fractions of four Brassicaceae microgreens on human colon cancer cells linked to their phytochemical composition. Antioxidants, 9(5), 368. https://doi.org/10.3390/antiox9050368

Di Gioia, F., Hong, J. C., Pisani, C., Petropoulos, S. A., Bai, J., & Rosskopf, E. N. (2023). Yield performance, mineral profile, and nitrate content in a selection of seventeen microgreens species. Frontiers in Plant Science, 14, 1220691. https://doi.org/10.3389/fpls.2023.1220691

Kowitcharoen, L., Phornvillay, S., Lekkham, P., Pongprasert, N., & Srilaong, V. (2021). Bioactive composition and nutritional profile of microgreens cultivated in Thailand. Applied Sciences, 11(17), 7981. https://doi.org/10.3390/app11177981

Li, X., Tian, S., Wang, Y., Liu, J., Wang, J., & Lu, Y. (2021). Broccoli microgreens juice reduces body weight by enhancing insulin sensitivity and modulating gut microbiota in high-fat diet-induced C57BL/6J obese mice. European Journal of Nutrition, 60(7), 3829–3839. Mouse study. https://doi.org/10.1007/s00394-021-02553-9

Ma, S., Tian, S., Sun, J., Pang, X., Hu, Q., Li, X., & Lu, Y. (2022). Broccoli microgreens have hypoglycemic effect by improving blood lipid and inflammatory factors while modulating gut microbiota in mice with type 2 diabetes. Journal of Food Biochemistry, 46(7), e14145. Mouse study. https://doi.org/10.1111/jfbc.14145

Riggio, G. M., Wang, Q., Kniel, K. E., & Gibson, K. E. (2019). Microgreens: A review of food safety considerations along the farm to fork continuum. International Journal of Food Microbiology, 290, 76–85. https://doi.org/10.1016/j.ijfoodmicro.2018.09.027

Weber, C. F. (2017). Broccoli microgreens: A mineral-rich crop that can diversify food systems. Frontiers in Nutrition, 4, 7. https://doi.org/10.3389/fnut.2017.00007

Xiao, Z., Codling, E. E., Luo, Y., Nou, X., Lester, G. E., & Wang, Q. (2016). Microgreens of Brassicaceae: Mineral composition and content of 30 varieties. Journal of Food Composition and Analysis, 49, 87–93. https://doi.org/10.1016/j.jfca.2016.04.006