Teacher. Teachers Plant Seeds. How to Collect Dahlia Seeds Save Some Beauty for Next Year! ZZ Plant Propagation , ZZ Plants can be propagated by leaf or stem. They have rhizomes which store water and energy. Each leaf will grow its own tiny rhizome , #rhizome #zzplant #zz #waterpropagation Where does canola oil come from? After canola flowers have bloomed, the flowers develop into pods. Each plant will produce up to 60 100 pods, and each pod will produce 15 30 seeds. And Can calendula seeds be planted in fall in zone 6b?