Cactus

Cacti are good house plants to consider because they are very low maintenance. Just because they do not take a lot of water does not mean that they don’t need water.

One type of cactus to consider is Astrophytum capricorne or goat’s horn, which is gray and spineless. They like warm temperatures but need to have good air flow (1). Another type is Cephalocereus, or columnar cactus. There are many species of columnar cactus, and they all require at least four hours of direct sunlight per day. They also need to be watered whenever the soil is dry (1). There are also several other types of cactus to consider.

 Goat’s horn                                        Columnar Cactus 
http://public.fotki.com/                                                  http://www.britannica.com

                             

Goat’s horn                                          Columnar Cactus

Light

In general, cacti need to have direct sunlight for at least four full hours per day.

Watering and Fertilizing

Water only when the soil is completely dry and fertilize with house plant fertilizer only once a month (1).

Temperature and Pests

They need temperature at 60 to 85 degrees (1). Cacti are extremely prone to spider mites.

  

(1) Clark, David E. Ed. How to Grow House Plants.Sunset Books, Menlo Park, CA 1976

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3 Comments

  1. Nathan said,

    March 25, 2008 at 1:13 pm

    I like that your blog is informative and helps people to do things, rather than being like a journal. It’s nice to find something useful online every now and then.

    It’s also good that you use sources to lend credibility to your work and pictures to make it look more professional (not to mention enhancing the oringinal intent of providing information).

    My only suggestion is to make each post longer. For example, with this cacti post I’m still left wondering what makes a cactus a good one or a bad one. They don’t have leaves like other plants so it can be hard for inexperienced people to pick out a good, healthy one.

    Keep up the good work!

  2. Marianna Brandt said,

    March 28, 2008 at 5:58 am

    Thank you for the great information on the cactus. I would like to ask about the soil for cactus. Is regular potting soil suitable for the cactus? I have always mixed a little sand with the soil but don’t know if that’s the right thing to do.

  3. Martin said,

    April 24, 2008 at 1:10 pm

    How do prevent and/or treat spider mites?


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