Southern Blue Flag (Iris virginica)

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Q: When do you sow the seeds outside? If you're starting them under grow lights first, when would you start them?

Asked by: Memaw - 3/29/2018

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Q: How many are in the pot. Thank you

Asked by: Billie - 6/4/2021

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Accepted Answer

They are fairly easy to germinate, but they don't always germinate at the same time. If you sow them outdoors in late summer or fall, many will germinate the following spring and continue to germinate for a year or two after.

If trying to start them indoors, try soaking them really well. Years ago, we pulsed them very briefly (it is easy to over-do it) in a blender to nick the hulls. This will help them absorb moisture. Soak the seeds in water. Change the water every 12 to 24 hours when it turns brownish. Do this for 3 days or so until the water stays fairly clear.

This year, we mixed a cup or two of seeds with very wet, almost muddy soil and put the mixture in a large ziplock bag. We've kept the bag in a refrigerator and will likely take it out in couple of weeks. I suspect this will result in decent germination.

Southern Blue Flag (Iris virginica)

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