Updated: Apr 11, 2018
Red Cap Cactus (or Ruby Ball Cactus)
If you are looking for an easy-care plant for your window, a cactus is the way to go! However, this post is specifically for the Red Cap Cactus. All cacti have different needs and require different amounts of water and sunlight. Here is what I have found most useful when caring for mine:
This cactus doesn't really require that much water. I've had mine for 2 years and have watered it probably 15 times...which isn't necessarily a good thing. BUT that just goes to show that you can totally forget about it for a while and it won't die! With a spray bottle, lightly spray the base of the cactus once a month. If you over-water, the cactus will become squishy and sink into itself.
When you first get your cactus, place it in indirect sunlight for the first few days. After, you can place it in direct sunlight. Immediately placing it in the sun will give the cactus sun burn. Note, the top of the cactus is not a light lover but the bottom green part requires a lot of light. I normally keep mine in indirect light and it's doing pretty well.
When deciding where to place your cactus, consider the temperature and humidity. You'll want a location that's warm with low humidity. In the winter, don't keep your cactus by an open window or near the heater.
That's all there is to it! They aren't very needy window plants so don't feel like you have to constantly attend to it. They are great as decoration for your window sill and will make your house feel more lively!