Knowing how to plant succulents is an important first step for anyone who wants a thriving indoor nursery. After all, succulents are celebrated for their low maintenance, and getting them in the right pot and soil only makes their care that much easier. “We believe part of the satisfaction of living with  indoor plants is in their modest requirements, and just as much pleasure can be found in a humble potted cactus as in a conservatory full of demanding tropical plants,” write Caro Langton and Rose Ray in their book,  House of Plants: Living with Succulents, Air Plants, and Cacti . While the London-based garden designers note that planting and growing succulents shouldn’t be too heavy of a lift, that’s only true once you know what you’re doing. “It’s likely your indoor greenery will find you when you are least prepared: given as a gift or perhaps stealing your attention while strolling through a local market,” they write.…