Open top cacti and succulent terrariums
Always check moisture levels before watering, and only water when the soil is powder dry (if in doubt, don’t water it). In winter the plants will consume much less water than in the summer months, and are at risk of rotting if the terrarium contains any excess moisture. Condensation on the glass or water in between the stones in the bottom are signs that there is way too much water in the terrarium. If this is the case, remove any lid and leave in a bright warm spot to dry it out. Unfortunately at this stage it is often too late to rescue your plants!
What we do:
In winter we check our cacti and succulent terrariums every 4 weeks, and water them lightly every 4-6 weeks or less. In summer months during it’s growing season, your terrarium will need more water. In the height of summer we check ours weekly, and water lightly every 1-2 weeks. N.B. We only water them if they’re dry, regardless of how long it has been since they were last watered.