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Our radish microgreens lasted about 14 days in the fridge before we had to compost them. Broccoli gave out at about 10.
That gap is the first clue to how long you can store microgreens at home. It depends on the crop, and even more on how cold you keep them. In storage trials, most crops kept 10 to 14 days near 5°C (41°F). Radish reached 21 days at 4°C (39.2°F).
On the counter, the clock runs much faster. Penn State Extension gives them two to four days at room temperature (Sánchez & Berghage, 2025). In one trial, bagged mustard lost its quality in under a day at 20°C (68°F).
Key Takeaway
Microgreens keep up to two weeks in a cold fridge, around 5°C (41°F). Warmth steals that time fast. In one trial, mustard that kept 14 days at 5°C (41°F) lasted just 4 at 10°C (50°F). Few fridges show their real temperature, so a few dollars on a fridge thermometer buys you fresher greens.
Read on to see how long each crop lasted, which pack kept them fresh longest, and whether to wash them first.
How long do microgreens last in the fridge?
At about 2:21 in this PBS Utah segment, the storage tip is simple: plan on roughly a week. That’s a safe home rule. The trials below show what a cold, steady fridge can do.
| Crop | Stored at | How long it kept | Source |
|---|---|---|---|
| Radish | 4°C (39.2°F) | 21 days, or 14 days at 10°C (50°F) | Berba & Uchanski, 2012 |
| Arugula, red cabbage | 4°C (39.2°F) | 14 days, or 7 days at 10°C (50°F) | Berba & Uchanski, 2012 |
| Mustard, bagged | 5°C (41°F) | 14 days | Dayarathna et al., 2023 |
| Broccoli, chicory, lettuce (six varieties) | 5°C (41°F) | No more than 10 days | Paradiso et al., 2018 |
| Microgreens in general | 5°C (41°F), dark | Up to 10 to 14 days | Sánchez & Berghage, 2025 |
So how long do microgreens last in the fridge? Ten days is a fair plan for most crops, and two weeks is possible when everything goes right. Our own radish and broccoli landed right inside that range. To see every storage study side by side, go to the shelf life and storage research hub.
Why do microgreens have such a short shelf life?
A cut microgreen is still alive, and it keeps breathing. But in a dark fridge it can’t make new sugar. So it burns through what it stored, and quality slips a little every day. A 2020 review put it plainly. Once cut, microgreens dry out, wilt, decay and lose nutrients fast. That’s why they cost so much and rarely travel far (Turner et al., 2020).
One research team measured that breathing directly. They tracked how much carbon dioxide cut microgreens gave off in storage, along with how long they still looked good (Berba & Uchanski, 2012). Cold slowed the whole process down. That’s why temperature keeps coming up in this post.
Shelf life starts before the cut, too. Broccoli harvested on day 13 and radish on day 10 showed less decay in the fridge than trays cut earlier (Ortiz et al., 2024). And calcium chloride sprayed on broccoli microgreens before harvest delayed their breakdown in storage (Kou et al., 2014). A follow-up found that spray gave the longest storage life of every calcium treatment tested (Kou et al., 2015).
For the full picture on harvest timing, see the harvest and yield research hub.
What’s the best container for storing microgreens?
The pack that kept microgreens freshest let in a little air. Not none, and not wide open.
In a test under store lighting, arugula in bags with tiny air holes kept its looks and smell for 14 days at 10°C (50°F). Unbagged arugula spoiled within 7 days. Fully sealed bags trapped too much moisture (Palmitessa et al., 2025). In another arugula trial at 5°C (41°F), vacuum-sealed packs lost quality from day 5 (Komeroski et al., 2024).
Radish adds a twist. It kept best in a film that lets oxygen through at a set rate, and it did better there than in bags with laser-cut holes (Xiao et al., 2014). Both packs breathe. But they breathe in different ways, and the best one changes from crop to crop. So the safe rule is a pack that breathes, not an airtight one.
At home, we use glass bowls with snap-on covers that have holes in them, so the greens can breathe. A dry paper towel on the bottom catches extra water. A zip-top bag works too, if you open it every two or three days to let air in. Too much water and microgreens turn slimy. Too little and they go limp.
Should you wash microgreens before you store them?
Washing can shorten storage life. How much depends on how cold you keep them afterward.
Penn State Extension says washing microgreens before sale shortens their shelf life. A chlorine wash cut germs on buckwheat microgreens at first. But after 7 days in storage, the washed ones grew germs faster (Kou et al., 2013). Radish told a similar story. After a bleach wash, germs grew fast once storage went above 10 to 15°C (50 to 59°F). Kept below 5°C (41°F), the wash did its job (Choi et al., 2020). So a wash only pays off in a truly cold fridge.
Whatever you decide, cut cleanly. We found no test of blade sharpness on microgreens. But on cut cantaloupe, pieces made with a blunt blade looked unsellable by day 6. Sharp-cut pieces still looked good (Portela & Cantwell, 2001).
If you do rinse, dry them before they go in the fridge. We pat ours with paper towels or a cotton towel. For radish, a salad spinner and a small fan worked well. For the safety side of washing, see the microgreens safety research hub.
What temperature should microgreens be stored at?
Aim for about 5°C (41°F) or a little colder. That one setting matters more than anything else you do.
The chart shows how fast storage life drops as the fridge warms up. Buckwheat microgreens at 1, 5 and 10°C (33.8, 41 and 50°F) carried fewer microbes and less tissue damage than ones at 15 and 20°C (59 and 68°F). The authors advise 5°C (41°F) (Kou et al., 2013). Food safety points the same way. On washed radish microgreens, E. coli grew fast above 15°C (59°F) and Listeria above 10°C (50°F), starting on day one (Choi et al., 2020).
Humidity counts too. Microgreens are mostly water, and dry fridge air pulls it out of them. But wet leaves rot. So Penn State Extension advises humidity that stays high and steady. A pack that breathes a little holds that balance better than an open bowl.
So how do you know how cold your fridge really is? Most can’t tell you. Few fridge controls show the actual temperature, so the FDA suggests a cheap appliance thermometer (U.S. Food and Drug Administration, 2024). Set one where you keep your microgreens and leave it for 5 to 8 hours. Standing it in a glass of water gives a steadier reading, since water doesn’t swing each time the door opens (Pacific Northwest National Laboratory, n.d.). A basic dial fridge thermometer like this one is all you need, and it works in the freezer too.
The FDA’s food-safety target is 4°C (40°F) or below. A fridge that meets it is already in the range where microgreens last longest. If yours reads warmer, turn the dial colder and check again after 12 hours. Then keep your microgreens in the coldest spot that doesn’t freeze them.
Should microgreens be stored in the dark?
For radish, yes. For other crops, the research is split.
Radish microgreens kept cold under light gained some vitamin C. But light sped up their decline overall. In the dark, they kept more carotenoids, the yellow and orange plant pigments, and stayed in better shape (Xiao et al., 2014). Penn State Extension’s 10 to 14 days assumes dark storage at 5°C (41°F).
Kale and mustard went the other way. Under light, both held more phenolics by day 5. Phenolics are plant compounds that act as antioxidants, and the authors saw shelf life gains, too (Gudžinskaitė et al., 2024).
So until more crops are tested, dark is the safer bet. A fridge goes dark when the door shuts, so for most homes this one takes care of itself.
How do you keep microgreens from going to waste?
Food waste adds up fast. In 2024, about 29% of the 240 million tons of food in the U.S. supply went unsold or uneaten (ReFED, n.d.).
Waste isn’t only the tray that turns to slime. Microgreens can lose nutrients in the fridge even when they still look fine. Garden cress lost 35 to 40% of its vitamin C over 15 days in plain packs, and 15 to 20% in the best pack (Azarpazhooh et al., 2026). Fenugreek microgreens lost B vitamins in every pack tested (Ranjitha et al., 2023). Some compounds even climb. Red beet microgreens had 1.3 times more phenolics after 10 days at 4°C (39.2°F) (Rocchetti et al., 2020).
The simplest fix is to buy or grow smaller batches more often. We try to eat our homegrown microgreens within two or three days of cutting, and we stagger trays so there’s always a fresh one coming. If you have more than you can eat in time, drying is the tested option. Here’s how to dehydrate microgreens at home.
Wrap-up: how long can you store microgreens at home?
Plan on about 10 days in a cold fridge. Sturdy crops like radish can go two weeks or more when the fridge holds near 5°C (41°F). Store them dry in a pack that breathes a little. Then rinse right before you eat them, not before they go in the fridge.
Storage is the last step of a tray you started a week or two before. For everything that comes earlier, from seed to cut, start with growing microgreens: what actually controls a tray.
Storing microgreens: frequently asked questions
Can you freeze microgreens?
We found no trial that froze fresh microgreens to eat later, so there’s no tested method yet. Drying has been studied instead. Hot-air drying kept vitamins B1 and B9 in radish microgreens, but vitamin C fell by up to 63% (Jauregui et al., 2025).
How long do store-bought microgreens last?
Count from the harvest date, not the day you bought them. Store-bought microgreens have already spent some of their fridge life in transit and on the shelf. If the pack shows a harvest or pack date, use that to plan, and keep them in their original clamshell or bag in the coldest part of your fridge.
How can you tell if microgreens have gone bad?
Look and smell before you eat. Storage trials judge spoilage by wilting, yellowing, decay and off odors (Palmitessa et al., 2025; Turner et al., 2020). A slimy feel or a sour smell means the tray is done, so compost it rather than picking through it.
Can you keep microgreens growing in the tray instead of cutting them?
Yes, for a short time. Penn State Extension lists selling microgreens still growing in their seeding trays as one option. Uncut greens keep growing, though, so they get taller and change texture each day. Cut them when they reach the size you like to eat.
How long do microgreen seeds last?
Seed life depends a lot on how dry the seeds stay. In a study of radish seed for microgreens, damper seed lost its ability to sprout faster, and the seedlings that did come up were weaker (Coronado et al., 2023). Store seed packets sealed and dry, and expect slower, patchier germination as old seed ages.
References
Want to go deeper? The Microgreens World research database holds 250+ studies on microgreen shelf life and storage. Search the storage papers →
Azarpazhooh, E., Sharayei, P., Sabeghi, Y., & Gandomzadeh, D. (2026). Influence of packaging systems and storage conditions on quality attributes, antioxidant capacity, and microbial stability of garden cress (Lepidium sativum L.) microgreens. Food Chemistry Advances, 10, 101250. https://doi.org/10.1016/j.focha.2026.101250
Berba, K. J., & Uchanski, M. E. (2012). Post-harvest physiology of microgreens. Journal of Young Investigators. https://www.jyi.org/2012-july/2017/9/12/post-harvest-physiology-of-microgreens
Choi, S.-Y., Chu, H. J., Rajalingam, N., Chae, H. B., Yoon, J.-H., Hwang, I., & Kim, S.-R. (2020). Growth of Escherichia coli and Listeria monocytogenes on radish microgreens washed with sodium hypochlorite during storage. Korean Journal of Food Preservation, 27(7), 850–858. https://doi.org/10.11002/kjfp.2020.27.7.850
Coronado, N. B., Gentallan, R. P., Hay, F. R., Timog, E. B. S., Quiñones, K. J. O., Bartolome, M. C. B., Endonela, L. E., Altoveros, N. C., & Borromeo, T. H. (2023). Seed viability constants and the decline in germination rates for radish: a combined viability equation and population-based threshold model analysis. Seed Science and Technology, 51(3), 319–327. https://doi.org/10.15258/sst.2023.51.3.05
Dayarathna, N. N., Gama-Arachchige, N. S., Damunupola, J. W., Xiao, Z., Gamage, A., Merah, O., & Madhujith, T. (2023). Effect of Storage Temperature on Storage Life and Sensory Attributes of Packaged Mustard Microgreens. Life, 13(2), 393. https://doi.org/10.3390/life13020393
Gudžinskaitė, I., Laužikė, K., Pukalskas, A., & Samuolienė, G. (2024). The Effect of Light Intensity during Cultivation and Postharvest Storage on Mustard and Kale Microgreen Quality. Antioxidants, 13(9), 1075. https://doi.org/10.3390/antiox13091075
Jauregui, M. J., Warren, E. R., Di Gioia, F., Kwasniewski, M. T., & Lambert, J. D. (2025). Effects of Hot Air Drying on the Nutritional and Phytochemical Composition of Radish ( Raphanus sativus L.) Microgreens. Journal of Food Science, 90(7), e70426. https://doi.org/10.1111/1750-3841.70426
Komeroski, M. R., Beninca, T., Portal, K. A., Malheiros, P. S., Klug, T. V., Flores, S. H., & Rios, A. O. (2024). Postharvest Quality of Arugula (Eruca sativa) Microgreens Determined by Microbiological, Physico-Chemical, and Sensory Parameters. Foods, 13(19), 3020. https://doi.org/10.3390/foods13193020
Kou, L., Luo, Y., Yang, T., Xiao, Z., Turner, E. R., Lester, G. E., Wang, Q., & Camp, M. J. (2013). Postharvest biology, quality and shelf life of buckwheat microgreens. LWT – Food Science and Technology, 51(1), 73–78. https://doi.org/10.1016/j.lwt.2012.11.017
Kou, L., Yang, T., Liu, X., & Luo, Y. (2015). Effects of Pre- and Postharvest Calcium Treatments on Shelf Life and Postharvest Quality of Broccoli Microgreens. HortScience, 50(12), 1801–1808. https://doi.org/10.21273/hortsci.50.12.1801
Kou, L., Yang, T., Luo, Y., Liu, X., Huang, L., & Codling, E. (2014). Pre-harvest calcium application increases biomass and delays senescence of broccoli microgreens. Postharvest Biology and Technology, 87, 70–78. https://doi.org/10.1016/j.postharvbio.2013.08.004
Ortiz, I., Zhu, X., Shakoomahally, S., Wu, W., Kunle-Rabiu, O., Turner, E. R., & Yang, T. (2024). Effects of harvest day after first true leaf emergence of broccoli and radish microgreen yield and quality. Technology in Horticulture, 4(1). https://doi.org/10.48130/tihort-0023-0031
Pacific Northwest National Laboratory. (n.d.). Check refrigerator temperature. Building America Solution Center, U.S. Department of Energy. Retrieved October 7, 2026, from https://basc.pnnl.gov/diy-guides/check-refrigerator-temperature
Palmitessa, O. D., Fioschi, G., Renna, M., Caponio, F., & Paradiso, V. M. (2025). Packaging impacts arugula microgreens quality under retail cold storage. Italus Hortus, 32(3), 59–71. https://doi.org/10.26353/j.itahort/2025.3.5971
Paradiso, V. M., Castellino, M., Renna, M., Gattullo, C. E., Calasso, M., Terzano, R., Allegretta, I., Leoni, B., Caponio, F., & Santamaria, P. (2018). Nutritional characterization and shelf-life of packaged microgreens. Food & Function, 9(11), 5629–5640. https://doi.org/10.1039/c8fo01182f
Portela, S. I., & Cantwell, M. I. (2001). Cutting Blade Sharpness Affects Appearance and Other Quality Attributes of Fresh‐cut Cantaloupe Melon. Journal of Food Science, 66(9), 1265–1270. https://doi.org/10.1111/j.1365-2621.2001.tb15199.x
Ranjitha, K., Mhasizotuo, Y., Vasudeva, K. R., Sudhakar Rao, D. V., Shivashankara, K. S., & Roy, T. K. (2023). Effect of modified atmosphere packaging on quality of minimally processed fenugreek (Trigonella foenum-graecum L.) microgreens. Journal of Horticultural Sciences, 18(2). https://doi.org/10.24154/jhs.v18i2.2086
ReFED. (n.d.). Food waste: The problem [2024 data]. Retrieved October 7, 2026, from https://refed.org/food-waste/the-problem/
Rocchetti, G., Tomas, M., Zhang, L., Zengin, G., Lucini, L., & Capanoglu, E. (2020). Red beet (Beta vulgaris) and amaranth (Amaranthus sp.) microgreens: Effect of storage and in vitro gastrointestinal digestion on the untargeted metabolomic profile. Food Chemistry, 332, 127415. https://doi.org/10.1016/j.foodchem.2020.127415
Sánchez, E., & Berghage, R. (2025, December 16). Growing microgreens. Penn State Extension. https://extension.psu.edu/growing-microgreens
Turner, E. R., Luo, Y., & Buchanan, R. L. (2020). Microgreen nutrition, food safety, and shelf life: A review. Journal of Food Science, 85(4), 870–882. https://doi.org/10.1111/1750-3841.15049
U.S. Food and Drug Administration. (2024, March 5). Refrigerator thermometers: Cold facts about food safety. https://www.fda.gov/food/buy-store-serve-safe-food/refrigerator-thermometers-cold-facts-about-food-safety
Xiao, Z., Lester, G. E., Luo, Y., Xie, Z., Yu, L., & Wang, Q. (2014). Effect of light exposure on sensorial quality, concentrations of bioactive compounds and antioxidant capacity of radish microgreens during low temperature storage. Food Chemistry, 151, 472–479. https://doi.org/10.1016/j.foodchem.2013.11.086
