Abstract: Erygium planum L. is a wild ornamental plant only distributed in Xinjiang, China. In order to promote the introduction and cultivation of E. planum, E. planum seeds and seedlings under ex-situ conditions were used as experimental materials, and their seed germination characteristics, flowering and fruiting were studied through field and laboratory tests. The results showed that the E. planum fruit was a double hanging fruit with thick peel and thorns, and its seeds were not dormant. Removing the peel significantly improved the germination potential of the E. planum, and soaking in water for 24 hours significantly improved the germination rate and germination potential. The E. planum cultivated in the open air begun to sprout moss on May 22, 2022 in Urumqi. The initial flowering period was May 27, the full flowering period was June 15, the final flowering period was July 9, and the fruit will started to bear fruit on June 29. The initial fruit ripening period was July 10, the full fruit ripening period was July 20. In the introduction site, life history can be completed normally and wintering can be safe. Therefore, the germination ability can be improved by removing the peel manually and soaking the seeds in water for 24 h.