Are sunflowers perennials? Do they re-grow each year or do you have to plant new seeds every year?
Hardiness Zone: 6a
By Mark from Birmingham, MI
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While most sunflowers are annuals and the seeds have to be replanted every year, there ARE some very similar to sunflowers that are perennials, depending on the SIZE that you want. Check out by googling or ask etc to ask what is similar to sunflowers but are perennials. I know that helleniums (I am not sure of the spelling), and I think Mullins are similar, if you want tall ones. But if you want true sunflowers, you must plant every year! (But they are sure worth it in beauty!)
Sunflowers are annuals, but do self-seed! Mulliens look like overgrown Foxglove, are annuals too, and also self-seed prolifically. They are not nearly as pretty as sunflowers, and can be quite invasive and do only come in yellow! Helleniums are family members and some are perennials.
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