To encourage faster germination of Plumeria seeds, maintain a warm and consistently moist environment. Soaking the seeds before planting can help soften the seed coat and promote quicker water absorption. Using a bottom heat source, such as a heating mat, can maintain a warm temperature that stimulates germination. Keep the seed tray covered with a transparent lid or plastic wrap to create a humid microclimate. Providing sufficient light without overheating the seeds also aids germination. By creating optimal conditions, gardeners can promote quicker and more uniform germination of Plumeria seeds.