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Penstemon 'Sweet Joanne'--overwintering?

Posted by ispahan 6a Chicago (My Page) on
Thu, Apr 5, 12 at 21:18

I just planted a few Penstemon 'Sweet Joanne' in full sun and well draining soil. For those of you who grow it, how did it overwinter for you?

I am just checking whether this will be a pretty annual or a reliable perennial.

By the way, I bought these from Bluestone last December or January when they listed this cultivar at 50% off. I got them for something ridiculous like $3.50 each. Ditto for Penstemon 'Dark Towers', although those were more like $4.50 each. The plants were delivered yesterday and they were absolutely huge and healthy. The new Bluestone rocks!

Follow-Up Postings:

RE: Penstemon 'Sweet Joanne'--overwintering?

ispahan wrote:

I just planted a few Penstemon 'Sweet Joanne' in full sun and well draining soil. For those of you who grow it, how did it overwinter for you?

Funny you mention this plant (SJ) as I bought and planted two of them *very* late this past fall...specifically October 29 2011 and I *think* I see evidence this spring that they both made it through my zone 5 winter (albeit a very moderate winter this year). So your zone 6a should be a breeze for them.

RE: Penstemon 'Sweet Joanne'--overwintering?

No problems here for a few years.

RE: Penstemon 'Sweet Joanne'--overwintering?

It stayed green all through winter here. These are great plants and bloom all summer. I just wish I could propagate them. Nothing has worked so far.

RE: Penstemon 'Sweet Joanne'--overwintering?

I've had it here in the frozen north for 3 or maybe it's 4 years now. It's done just fine through my winters, hoping our weird spring doesn't do it in.

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