The Cactus University

Welcome to our learning centre, The Cactus University, where you can learn everything to do with cactus growing and care, from the basics of lighting and watering to advanced soil recipes. Have a browse or use the search function below to find what you’re looking for.

Tim Stephens Tim Stephens

The Best Rooting Hormone for Cacti: Indole-3-Butryic Acid (IBA) Powder Explained

Get our advice on the best rooting hormone for cacti cuttings. Learn about the three main types of rooting hormones: IAA, IBA, NAA, and why IBA is the recommended choice. Discover the benefits of using IBA rooting powder for cacti and why powder is better than gel. Get our product recommendation for high-quality IBA rooting powder, Rootex-P.

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Tim Stephens Tim Stephens

Does a cactus need water?

Yes, absolutely. Whilst most cacti can indeed survive extended periods without water, this does not mean that cacti don’t require any moisture at all. Make no mistake that if you completely starve your cactus of water that it will die a slow and agonizing death.

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Tim Stephens Tim Stephens

What is a “Cowboy Cactus”?

Have you heard of the term ‘Cowboy Cactus’? We often get asked if we sell them, but they are often surprised when we tell them that these plants aren't cacti at all. Fnd out what people really mean when they say "Cowboy Cactus" (as well as our own opinion of what a cowboy cactus really is).

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Tim Stephens Tim Stephens

What is Zeolite? And why is it great for Cacti?

If you have been following us for a while you’ll have heard us talk about Zeolite. Let’s explore what zeolites are, why you should add them to your cactus soil mix and some of the benefits they provide our plants.

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Tim Stephens Tim Stephens

What is a PC San Pedro?

“PC San Pedro” is a phrase that gets bandied around often and has become synonymous with "bad genetics" in the cactus community, but what is it really? What exactly is a "PC San Pedro", and how can you spot one, and should you avoid them?

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Tim Stephens Tim Stephens

Advanced Cactus Soil

Read our Cactus Soil 101 guide and want to dive a little deeper? Our Advanced Cactus Soil guide goes into more detail and shares some expert tips and tricks for your soil mix.

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Tim Stephens Tim Stephens

How to identify San Pedro cactus

Just getting into cacti and can’t for the life of you work out how to identify a San Pedro cactus if you walked past one at a nursery? Here are our identification tips and tricks.

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Tim Stephens Tim Stephens

Trichocereus or Echinopsis?

Is it Trichocereus, or is it Echinopsis? Learn why these cacti are sometimes referred to by different names, and what the “correct” names are.

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Tim Stephens Tim Stephens

How to Root a Cactus Cutting

Learn how to correctly pot a cactus cutting to encourage healthy root generation and to minimise the possibility of rot and other issues.

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Tim Stephens Tim Stephens

A Guide to Watering Cactus

Too much or too little water is the leading cause of cactus death. Contrary to popular belief, cactus do need a decent amount of water particularly large species like ours. The difference is that they are just adapted to living for longer periods without it. Learn how to water your cacti correctly here.

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Tim Stephens Tim Stephens

Cactus Soil 101

Cactus soil is cheap and easy to make at home, and much better than that stuff they sell pre-made. Learn how!

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Tim Stephens Tim Stephens

How Much Sun Does a Cactus Need?

Cactus are sun loving plants, but if you just throw them out in the harsh Australian sun in summer they will have a few complaints. Learn all about cactus sun requirements here.

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