Where can I purchase Osrich ferns for my garden?
I live in Canada zone 3. I would think you'd be a zone 4ish? We can buy Ostrich Ferns at any Nursery up here and through some mail order catalogues as well. Give the nurseries in your area a call and ask them if they will be stocking them this spring. I believe they are very common.
Online, you can buy ostrich ferns from New Moon Organics.
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Here is a link that might be useful: New Moon Organics