Answer: When morning glory seeds are ripe, they are dark-brown to matte-black. Light brown or tan seeds are probably not mature. Before tossing them, though, you might want to try a germination test to see if they will sprout. Take about a dozen seeds of various colors, nick the seed coats, soak them overnight, then place them on a paper towel and put them into an unsealed plastic bag. Check every few days to see if they are sprouting. You'll be able to tell within a week whether the seeds are viable. Because of the alkaloid coating, many states ban the sale or exchange of morning glory seeds so I wouldn't attempt to share them over the internet. Instead, try a local garden club or some neighborhood gardeners.
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