In recent months, terrariums have gone from being a mere gardening curiosity to a genuine phenomenon in Spain and Europe. More and more people are creating these miniature plant worlds inside glass containers, whether as a decorative element, an educational project, or a way to connect with nature in urban spaces. The trend has grown especially among those seeking low-maintenance alternatives to having a touch of greenery at home without needing a garden.
A terrarium is simply a miniature garden grown inside a transparent container, usually made of glass. It can be open or closed, and in the latter case, it creates its own water and nutrient cycle. Gardening experts point out that their popularity stems from their ease of care and the opportunity to experiment with different terrarium plant species , from succulents and ferns to mosses and carnivorous plants. Terrarium creation has become a star attraction at fairs and workshops throughout Spain.
Why are terrariums so popular in European homes?
The rise in popularity of terrariums is due to several reasons. On the one hand, living in small apartments and the lack of outdoor space have driven the search for adapted green solutions . A terrarium takes up little space and can be placed on a shelf, a table, or even hung up, making them ideal for creating mini-gardens in small spaces . On the other hand, lockdowns and working from home have increased interest in hands-on activities and wellness, and assembling a terrarium is a relaxing task that also offers a very attractive visual result.
In countries like Germany, France, and the United Kingdom, terrariums have also gained popularity in offices and commercial spaces. Companies use them as biophilic elements to improve the work environment , and studies indicate that the presence of plants reduces stress and increases productivity. In Spain, specialist shops and nurseries report an increase in sales of terrarium kits, as well as glass containers with geometric shapes.
Keys to creating and maintaining a successful terrarium
For those who want to set up their own terrarium, experts recommend following a few basic steps. First, choose a wide-mouthed glass container if you're working with large plants, or a sealed jar if you're aiming for a self-sustaining ecosystem. The base should include a drainage layer of stones or gravel to prevent water from accumulating and rotting the roots. Next, add activated carbon to filter the water and prevent unpleasant odors, and finally, a layer of substrate suitable for each plant.
As for species, succulents and cacti are ideal for open terrariums because they require little humidity. For these, there are guides on how to create a succulent terrarium . For closed terrariums, mosses, ferns, and fittonias work very well. Watering should be moderate: in a closed terrarium, the water is recycled and hardly any needs to be added , while in an open one, it's advisable to water every one or two weeks depending on the temperature and light. Location is also key: it's best to avoid direct sunlight, which can overheat the glass and damage the plants.
Educational and therapeutic benefits of terrariums
Beyond their decorative value, terrariums have significant educational value. In schools and environmental education centers, they are used to teach children and young people about natural cycles, photosynthesis, and ecological balance. Setting up a terrarium fosters patience, observation, and responsibility , as children learn to care for a living being and understand its needs.
From a therapeutic perspective, miniature gardening has been incorporated into emotional well-being programs. Several European studies indicate that contact with soil and plants reduces anxiety and improves mood , often using plants associated with emotional processes . In Spain, some associations offer terrarium workshops for seniors or people with disabilities as an accessible and rewarding activity.
Terrariums offer a simple and beautiful way to bring nature indoors, and their popularity continues to grow. Whether as a hobby, a decorative element, or an educational tool, these small ecosystems demonstrate that you don't need a large garden to enjoy the benefits of plants. With the right materials and a little patience, anyone can create their own miniature world and watch it evolve day by day.
