How to Care for Peace Lilies

4. Harvesting seeds

If you want to start a new plant from scratch instead of transplanting, you can harvest seeds from a peace lily plant. Watch the flowers for signs of pollination like green hoods and swollen green center spikes. Leave these pollinating flowers alone for four to six months. Once the pod becomes dry and brown or black, cut the seedpod stalk at its base with clean pruning shears. Scrape the seeds out of the pods and put them on a hard, smooth, flat surface. Separate the seeds from the leftover pod and scraps. Use them right away or store them in a cool, dry place in a bag or envelope.