Self sowing biennials


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Can someone help me wrap my mind around biennials? Do they bloom their second year and every year thereafter? Or every other year? The way some garden sites word it, they are saying to plant the first and second year so you’ll never be without blooms. If I have biennials that self sow (one ex is Canterbury bells) I should have blooms every year, right? For example, I have planted Canterbury bells before, but never lived in one place long enough to see what happened the year after they first bloomed.
 
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Logan

Logan
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Biennials you grow one year to flower the next. Usually they don't live to the next so you have to sow them every year. Some will grow from seed that has fallen off but some need extra care.
 
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Gotcha. I think part of my confusion was due to some of them saying they were by biennials or short-lived perennials. Some of them say to sow two years in a row for nonstop blooms… But if they self sow as well, seems like you wouldn’t have to sow more than once. I’m just gonna sow and hope they reseed, and go from there. Thank you!
 

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