You can gather the seeds in late summer - early fall, and plant them the following spring. However, since you want something else where the primroses now are, have you thought about digging them up and moving them. Since they generally flower all summer, you should be able to find a place for them. Here's an article on primrose: https://www.gardeningknowhow.com/ornamental/flowers/primrose/growing-primrose-primrose-plants-in-your-garden.htm
Answered on May 21, 2014
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