So, this is easy but will take long time (months) to germinate but it is worthy.
You will need small re-sealable bags and some clematis seeds which already removed shells. Fill with clean water with seeds inside the re-sealable bags, water doesn’t have to fill full. Keep these bags in a plastic container with lid (because they don’t like light to germinate) and place this container somewhere warm (warmer is good for seeds to germinate). Then wait. Check them once a week.
Once you find seeds sprout, pick them from water bag and place them on top of soil, keep soil moist, now they need light. Place them by window if it is indoor growing condition. Then water them and wait couple months, you will have young plants which are ready to climb, plant them outdoor.
鐵線蓮種子去殼後用夾鍊袋裝好泡清水,置於黑暗溫暖處讓它們發芽. 一週檢查一次. 有發芽的種子就撿出放在盆土土表,半日照處,要保持土壤濕度,種子會自己生長. 等本葉長到4-6片就可以種到戶外全日照處,