Answer: Considered perennial plants in some areas of the country, delphiniums are usually treated as annuals in cold climates. Since you didn't have a harsh winter, and at least one plant survived, wait a few more weeks before giving up on the rest of the delphiniums. If the new sprouts haven't been nipped off by snail or slugs hiding in the leaf mulch, they should be poking their heads out of the soil soon. If you find no other sprouts, replant the area with newly purchased delphiniums.
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