Place your bottle in a medium to bright spot where it won't receive any direct sun. Too much light can cause your terrarium to "cook." If you see condensation beginning to develop inside the bottle, move your terrarium where it will receive a bit less light.
Hypoestes (Polka Dot plant) will let you know when they are thirsty when the leaves droop a bit. It's best to not let them get too droopy too many times as this causes stress. If you see that the sphagnum moss and potting mix are dry and the leaves are just beginning to droop, add a bit of water. Watering will seldom be necessary if the cork is secure.
Watering should be just a spray or 2 from a mister or just enough drops to add moisture to the sphagnum moss and potting mix.
You want to see some moisture in the sphagnum moss and potting mix, but not standing water at the very bottom. Too much moisture encourages mold.
Using a Q-tip or small cloth, wipe any excess condensation that does occur from the inside of the bottle. If mold develops from too much moisture, soak a Q-tip in rubbing alcohol and dab the affected spot. Give it a minute for the alcohol to evaporate, and perhaps keep the lid off for a bit longer to help dry out the terrarium some if needed.
As your plants grow, you can prune them to keep them smaller, remove them and pot them, or create a larger closed terrarium. (We're happy to help with this!)
The layers of your terrarium from the bottom up are: pebbles, horticultural charcoal, sphagnum moss, potting mix, plants and pebbles.
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