A good rule of thumb to know: less than 50 percent germination rate means it’s time to buy new seeds. There are seed banks, such as the Svalbard Global Seed Vault, whose goal is to preserve crop genetic diversity, that store seeds at between -16 and -30˚C… and they estimate that at least some seeds will still be viable in 7,000 years! Viability typically declines before germination rates decline, so it is possible for old seed to still germinate yet produce weak seedlings. What are Coriander Seeds? If the seeds are kept in optimal conditions you could expect much longer storage times. It is a hard, round little seed that is a light brown color. Also, these numbers are minimum years. Likewise, every 10-degree F. (-12 C.) increase in temperature can also cost seeds half their storage life. Overview Information Coriander is a plant. But this year, I decided to do a little research about how long seeds last. 5,500+ Seeds Thai Organic Parsley (Non GMO), Culantro, Mexican Coriander, Recao, Cilantro ancho, Long Coriander, Parsley (Eryngium foetidum) Herb Seeds. Note that both germination rates and seed viability can decline with age of the seed. 3.4 out of 5 stars 17 $10.40 Storing seeds in the freezer will provide seeds with more consistent temperatures than refrigerator storage. Some varieties of tomato seeds have even been known to germinate after as long as 16 years! As seeds age, their germination rate naturally declines. By taking a sample of 10 to 20 seeds and pre-sprouting them in baggies, you can gauge how viable those seeds are before committing to starting more of those seeds or transplanting the seedlings. I was a little surprised to learn that seed viability varies considerably with the type of plant. In fact, some seeds, if properly stored, can be viable even after ten years. Simply take twenty seeds of the vegetable variety. The germination rates usually starts to decline after that. All seeds will stay viable for at least a year, and storing seeds properly can allow many seeds to remain viable even longer. If you are still unsure of the seed quality, a germination test can be done. Coriander is a seasoning. Coriander seeds can be little difficult to germinate depending on where the seeds are sourced from. Both the leaves and fruit (seeds) of coriander are used as food and medicine. Under average home conditions, however, seed viability is much, much shorter. However, the term "coriander" is typically used to refer to the fruit. If it is straight from the kitchen, there is a chance that it may have been processed. A packet of vegetable seeds may look dry, brittle, and lifeless, but in many cases, seeds are very much alive. Seed Viability. Storing unused vegetable or flower seeds does require some care. Inside each plant seed is the embryo of a future plant. Seed viability also will vary depending on whether the seeds are have been pretreated or pelletized. Viability refers to the seed’s ability to produce a vigorous seedling. Buy coriander seeds from a garden store and use that . Coriander seeds are ground and used in breads, Indian and Middle Eastern foods, Latin and Asian cuisine and is also a component of pickling spices. For example, if the seeds are normally round in shape, but now have divots and indentations, the seed may no longer be viable. Moisten a paper towel and place the seeds … Tips for Storing Seeds. However, seeds do not remain alive forever. Many factors will affect the viability such as, the seed’s age, humidity, temperature and light. For every 1% increase in humidity, a seed can lose half its storage life. How long seeds remain viable depends on the type of seed and how well it is stored. 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