Comment concerning Delphinium grandiflorum 'Amour': Delphinium grandiflorum as "half-hardy annual"

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As a comment about Delphinium grandiflorum 'Amour', bxncbx wrote:

The seed packet said this variety is a half hardy annual and will only overwinter in mild climates. I planted 3 last year and 2 have returned despite the horribly snowy & cold winter. Oddly, the one plant that was mulched did not return. The other 2 were just covered in fallen leaves.
Name: Lori
Calgary, Alberta, Canada
Plant Identifier
growitall
May 4, 2014 11:12 AM CST
It's really amusing that Delphinium grandiflorum is being sold as a "half-hardy annual"! I have to assume this is meant to cover off the difficulty there seems to be in some warm/humid climates in growing delphiniums in general?
Delphinium grandiflorum is hardy in inland continental climates (i.e. cold, dry) through zone 2! If the problem with growing it relates to wet, humid climates and winter wet, then mulching may be the worst advice possible.
Lori
[Last edited by growitall - May 4, 2014 11:13 AM (+)]
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Name: Elena
NYC (Zone 7a)
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bxncbx
May 4, 2014 8:16 PM CST
Good to know! From now on, no more mulch. Thank You!

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