echnically speaking, all wallflowers are perennial; that is, they live for more than one or two years. However, they are not long-lived plants, which is why the spring-flowering hybrids, like…
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echnically speaking, all wallflowers are perennial; that is, they live for more than one or two years. However, they are not long-lived plants, which is why the spring-flowering hybrids, like…