Have you heard? Millennials are obsessed with plants. In the last couple of years many publications, including this one, have analyzed the generation’s sudden interest in greenery. If you can’t afford a home, buy a philodendron. If you aren’t planning to get married anytime soon, that’s O.K. — buy a cactus. Can’t afford to have kids? A ficus tree will do for now.

In 2017, 30 percent of gardening households were made up of 18- to 34-year-olds, and they spent more per household than other demographics, according to a study by GardenResearch.com, a division of the National Gardening Association. Like other millennial interests, plant culture has inspired an active online community. So-called plantfluencers post photos of their greenery and exchange plant care tips on Instagram. Summer Rayne Oakes, for instance, is best known for housing 700 plants in her 1, 200-square-foot apartment in Brooklyn, and Justina Blakeney, the founder of the lifestyle brand Jungalow, has more than one million followers on the platform.