how long are seeds viable?
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Most Vegetable Seeds Can Stay Viable for Years Most vegetable seeds remain good for about two to three years, but some, such as onions, deteriorate within a year and others such as lettuce, can successfully sprout after five years.
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When it's October, people often wonder if it is too late to plant new seed. The good news is if you hurry, seed can still be planted in October with the hope that it will survive the upcoming winter. Although September is the best time, often we can still plant grass seed up to October 15 with good results.
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Normally, corn requires approximately 100 to 120 GDUs to emerge, which under favorable conditions can be 4 to 5 days after planting. 1 If cool or dry conditions exist, emergence may be delayed several weeks.
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Activated nuts have been soaked in water for around 12-24 hours to begin the germination process; and then often times slowly dried again, so they're still crisp. Nuts are plant seeds, and soaking them for long enough can start the germination process, which causes changes in the seed.
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The difference between 'sowing' and 'planting' Sowing involves putting seeds into a soil, the seed then (hopefully) germinates and a plant grows - until the seed goes into the soil, the seed is dormant and needs no special attention (usually 'fresh' seeds have a shelf life of 2 to 4 years).
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Direct sow or transplant in late May or early June when soil is warm. For transplants, start seeds indoors in late April or early May. Optimal soil temperature for germination: 25-35°C (68-95°F). Seeds should sprout in 7-14 days.
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First of all, be sure you've given plants enough time to germinate. At sowing time, mark the pots with the type of plant, date of sowing, and days to germination (found on the seed packet). Some seeds take two weeks or more to sprout. Poor germination can be caused by overly wet or cold soil, which causes seeds to rot.
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For best results when temperatures climb above 70 degrees F, store them in a plastic or glass airtight container and keep them refrigerated year round. They can also be frozen. Sunflower seeds with shells have an extended life and can be kept at room temperature for up to a year in cooler climates.
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The best by date is generally set at 2 years after processing by most manufacturers, so since chia seeds are good for at least 2-4 years if stored properly, this labeling generally provides for another 2 years after the best by date.
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Planting Asters While asters can be grown from seed, germination can be uneven. You can start the seeds indoors during the winter by sowing seeds in pots or flats and keeping them in the refrigerator for 4 to 6 weeks to simulate winter dormancy. Sow seeds one inch deep.
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To keep them fresh for much longer, store the containers in the refrigerator or the freezer, where nuts and seeds are cold and happy and unaffected by fluctuating kitchen temperatures. In general, they'll stay fresh for up to six months stored in the refrigerator and for up to one year stored in the freezer.
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Most seeds germinate when the soil temperature is between 68(and 86(F. Once germination occurs, the optimum growing temperature for theseedling is about 10(F cooler than the optimum germination temperature. Moisture is critical for germinating seeds.
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After 22-24 weeks, a viable pregnancy is when a baby has a chance to survive outside of the womb. However, some countries without adequate neonatal care consider non-viable at less than 26-28 weeks gestation.
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Stored at room temperature, an acorn squash will last one or two months; to determine if one has gone bad, slice it in two. Slimy, gray seeds are a good indicator that the squash has turned.
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Most seeds germinate when the soil temperature is between 68(and 86(F. Once germination occurs, the optimum growing temperature for theseedling is about 10(F cooler than the optimum germination temperature. Moisture is critical for germinating seeds. They like a moist but not soggy environment.
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People enjoy the seeds of the pomegranate fruit. The fruit can last for one to three months if refrigerated and unopened. Once you slice open the pomegranate, you will need to eat it within a week as the seeds go bad quickly. ... Foods have a rotting smell when they've gone bad and pomegranates are no exception.
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Growing Lychee from Seed Lychee seed propagation works best with mature fruit. ... pot with moist, rich growing medium and sow a single seed at a depth of 1 inch (2.5 cm.). Keep the pot moist and warm (between 75 and 90 F., or 24 and 32 C.). Lychee seed germination usually takes between one and four weeks.