How Long Does It Take Seeds To Sprout Outdoors. They germinate best in temperatures between 65 and 75 degrees fahrenheit. Seeds take one to three months to germinate before the plant begins to grow.
Healthy seeds are firm, dry and have a light or dark brown color while bad seeds have a green or white appearance and feel brittle. Also take about 2 weeks to sprout. Sprout seeds just until they’ve germinated to avoid snapping off longer sprouts.
If all goes well, the seeds should take 24 hours to start sprouting, but if they haven’t (this might happen with old seeds), leave them for up to 72 hours and check on them constantly so they don’t run out of moisture.
After soaking the seeds as described above, drain off the water and put seeds on a piece of window screen or in a small sieve. They will take quite some time (up to 6 weeks!) to sprout in such cool soil. There is, of course, a benefit to starting your seeds outdoors if you plan to grow outdoors. Healthy seeds are firm, dry and have a light or dark brown color while bad seeds have a green or white appearance and feel brittle.