- Plan on using 25% of a terrarium vessel for drainage material and soil mix. Read more about the supplies you'll need to build the soil layers in a terrarium.
- Don't overwater your terrarium. "If the walls are completely fogged up with condensation, open the terrarium and allow some of the water to evaporate for a day."
- "A closed terrarium will likely not need watering more than once or twice per year." That one is news to me! I've never had a completely sealed up terrarium so I cannot attest to that fact based on my personal experience.
- Like many plants, you will need to occasionally prune or remove dead leaves. "Prune plants by pinching out growing tips or using a small blade attached to a stick inserted through the container opening." I've had minimal luck with the small-blade idea and prefer using very, very long scissors (specially purchased online). This probably depends on the sturdiness of the plant in question.
- And I've saved the best for last, as it an unfortunate truth of the terrarium hobby that I've mentioned before.
"Occasionally, plants may overtake a terrarium or die, making replacement necessary. It may be necessary to start over if plants are extremely overgrown and cannot be removed without disrupting the entire terrarium."Whether a terrarium is overgrown, or fails - just like any other gardening experience - sometimes plants don't work out. Read my five tips for starting a terrarium over again (the right way).