7 Common Beginner Mistakes

1. 1. Using garden soil or regular potting soil straight from the bag
   It compacts, stays soggy and brings pests. Always make or buy a well-draining terrarium mix.
2. 2. Overplanting
   Plants grow. Leave space and choose slow-growing species for small containers.
3. 3. Too much direct sun
   Greenhouse effect inside glass can easily reach lethal temperatures. Bright indirect is safest.
4. 4. No drainage layer
   Roots sitting in standing water is the fastest way to root rot.
5. 5. Watering like a houseplant
   A closed terrarium can go months without water once balanced. Start very conservatively.
6. 6. Ignoring airflow
   Even closed terrariums benefit from occasional venting, especially in the first weeks.
7. 7. Adding animals too early
   Springtails and isopods are great but only once the terrarium has stabilised for a few weeks.