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The Hardiest of Hardy Perennials. Generally speaking, a plant is classified as a perennial if it can survive to Zone 7. Above that range, plants become tender perennials or annuals. For the purpose of this article, we will only consider the "hardiest" of hardy perennials, plants that are hardy to Zones 4 and lower (or higher in latitude). The plants on this list are definitely tough enough to survive your area's worst winters.

The Hardiest of Hardy Perennials. Generally speaking, a plant is classified as a perennial if it can survive to Zone 7. Above that range, plants become tender perennials or annuals. For the purpose of this article, we will only consider the "hardiest" of hardy perennials, plants that are hardy to Zones 4 and lower (or higher in latitude). The plants on this list are definitely tough enough to survive your area's worst winters.

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#Coneflower- tolerates full sun to light shade. bloom from early summer to fall. one of the most hardy perennials.

#Coneflower- tolerates full sun to light shade. bloom from early summer to fall. one of the most hardy perennials.

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I want bleeding hearts for my new place. I had them at the side of my first house, and they were so nice!
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Candytuft: Hardy evergreen perennial ground cover for zones 3-9. - Just planted this by my front steps

Candytuft: Hardy evergreen perennial ground cover for zones 3-9. - Just planted this by my front steps

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Ranunculus Asiaticus White; Hardy, perennial. Thrives in sun or shade with moist but well-drained soil. A good choice for borders, pots and containers.

Ranunculus Asiaticus White; Hardy, perennial. Thrives in sun or shade with moist but well-drained soil. A good choice for borders, pots and containers.

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One of our favorite shade perennials is now blooming! Tiarella has unique foliage and looks stunning while in bloom!

One of our favorite shade perennials is now blooming! Tiarella has unique foliage and looks stunning while in bloom!

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Astrantia major. shade-tolerant, long-flowering and very long-lived perennials in the garden and cut for a vase - cottage garden favourites.

Astrantia major. shade-tolerant, long-flowering and very long-lived perennials in the garden and cut for a vase - cottage garden favourites.

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