DIY Beaded Potted Plants Tutorial Vegetative propagation is a form of asexual plant reproduction where new offspring grow from parts of a parent plantsuch as stems, roots, or leaveswithout the need for seeds or spores., Zinnias are blooming!! Zinnias are one of the fastest growing flowers! I seeded these end of July and they are blooming now just 2 months later! They do well in the Succulent Centerpiece My cuces are looking rough. Im thinking spider mites?