Donkey's Tail, Burro's Tail Sedum morganianum Succulent Care Tips Marigolds are one of the easiest and most reliable flowers to start from seedbut a few small tweaks can give you stronger, more uniform plants:, , 1. Dont plant too deep, Marigold seeds are long Easy Southern Cornbread Set of 2 Artificial Succulent Plants, Fake Plants in White Ceramic Pots with Bamboo Tray, 6.5 Tall Succulents and cactus from lowes home improvement garden center.