How often do you need to water your terrarium?

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Terrariums offer a unique and delightful way to bring a touch of greenery indoors, but knowing how to properly water them is key to their survival as well as looking their best. Whether you have a moss, fern, succulent or even an air plant terrarium, each requires a specific watering regimen tailored to its environment and plant types. So how often do you need to water your terrarium?

Overwatering or under-watering can lead to poor plant health or even decay, making it essential to understand the needs of your contained ecosystem. This article explores the different watering needs of various terrariums, providing you with expert tips to ensure your miniature landscapes thrive.

Moss / Fern Terrariums

Moss / Fern Terrariums do not need a lot of watering because they create their own micro-climate in their enclosed glass containers.

Check your terrarium at least twice a month to see if it needs a few drops of water, or if there is too much condensation on the glass, open the lid to let the moisture evaporate for a few hours. (Remember to replace the lid to form an air-tight seal). If the soil is looking quite dry, then I would usually use a spray bottle to mist the soil, then use a paintbrush and a paper towel to wipe the glass down.

Open Air Succulent / Cactus Terrariums

Succulent terrariums will require more water than closed terrariums – if the soil looks dry, spray your succulents with some water to keep them happy and healthy. I like to use a mister spray bottle as you don’t want to give them too much water.

Air Plant / Tillandsia Terrariums

Since these air plants (Tillandsias) get most of their nutrients from the air, they do need an occasional soak in a room temperature bowl of water about once every 2 weeks for about an hour.

Once you’ve given the air plant a “bath”, take it out of the water, and allow it to dry completely before putting it back into the glass jar/container. If the tips of your air plant start to go brown – it means that it’s not getting sufficient water and you may need to increase your “bathing” routine. You can also trim off the dried tips to keep your air plant looking its best.