A rainforest indoors.

 

 Front opening reptile tank

Given all the high-rise condominiums going up, city residents without a backyard will soon outnumber those who do have a patch of green. It’s especially hard for those who are used to having a garden, so why not a mini garden, a terrarium. They can be easier to maintain than trying to keep houseplants alive in an arid home.

I have three or four terrariums on the go at different times. The mini gardens help me endure the long wait for spring to arrive. They range from the size of a light-bulb to as big as a double air fryer. A terrarium is like a small zoo for plants and are ideal for small houseplants that originate in the lower light humidity of a rain-forest, not in a toasty home. Once established a terrarium is easy to maintain. 

A typical plant terrarium is a closed eco system. However, if used for cacti or other succulents, then it must remain open to provide more desert-like conditions, otherwise they won’t last long sweating it out in sticky box. Here, I’m focusing on a closed terrarium. 

You can purchase a new one, although most of the ones I see are small, big enough for only a plant or two. My larger one is designed for housing reptiles. The plants are happy and take little care, especially as there’s no need to check every day to see if they need watering. If you have an old aquarium or reptile tank sitting around, it will only need a glass or clear plastic cover that can be opened slightly if necessary to control the humidity. 

The first thing you must do before starting to build yours, whether brand new or not, is to sterilize it, or at least clean it well, which is my lazy approach. Next is soil. Here’s where it can get controversial. Most books, magazines, and YouTube videos will recommend having a layer of gravel below the soil, even adding charcoal. I’ve never done either and I’ve never found it necessary. My terrariums are the happiest with simply a couple of inches or more of a soil-free medium. 

It’s easiest to mix and moisten the soil before placing and that avoids any chance of making it too wet. You can make a few hills and valleys in your mini landscape and add a rock or piece of driftwood to make it more interesting. The soil can be deeper in places depending on the plants you add. Almost any low growing houseplant is suitable, but don't mix light-loving flowering plants with ones that prefer shade. If you need colour add varieties of Fittonia, the nerve plant, with their beautiful, bright and colourful veining.

So, if the fish are floating or Iggy the iguana's been missing for a month, you might as well make good use of that tank. Has the snow melted yet?

Note: Shown above is a front opening reptile tank for easy access.