I bought an adenium two years ago, it took well, but there've been no flowers at all. It's on a south-facing window, I water it rarely, and the soil is special for succulents. Maybe it's missing something? How do I get it to bloom?
Don't overfeed it with fertilizer hoping to trigger blooming - this often backfires and the plant just grows more leaves instead. Adenium needs a clear dormancy period to flower: coolness (15-18 degrees) and reduced watering for about a month or two, then in spring increase light and heat. If your home stays warmer than 20 degrees in winter, the plant simply doesn't "understand" that it's time to rest and prepare for flowering. Try moving it away from the radiator in winter or placing it closer to a cold window - that's when buds should appear in spring.
The second winter has already passed, and still no flowers - that's strange, but fixable. The main thing to understand: adenium is different from typical houseplants. A bright window alone isn't enough for it. Even on a south-facing windowsill, the light intensity might be insufficient, especially in temperate zones and further north. Try moving it as close to the glass as possible or even taking it out to the balcony from April to September - that often helps.
Once you sort out the light, pay attention to dormancy. Winter rest needs to be strict: not just cooler, but actually cold (14-18°C) and dry. If your adenium is sitting near a radiator or in a warm room, it won't enter a proper dormancy period and won't put its energy toward flowering. Watering in December-January should be minimal, almost none - a couple of times a month with literally just a spoonful of water is enough.
The hidden issue: young adeniums sometimes don't flower at all in the first couple of years, even under ideal conditions. They just need to grow while the plant builds up strength. But if you maintain a cold winter rest for three years straight and increase light in summer, flowers usually appear. You can give fertilizer in spring (nitrogen-based) and summer (phosphorus-based) - but that's secondary.
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