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Elegance, Underglass.

Welcome to Underglass Terrariums – home of elegant miniature ecosystems. Our unique terrariums create a stunning, stylish focal point for any room, thriving with minimal input – a perfect gift for anyone from beginners to the most green-fingered. They’re sure to be a welcome addition to any home!

DIY Terrarium Kits

Terrarium Accessories

Terrarium Plants

Terrarium Jars

New Products

Large Terrarium Plant Selection

£25.99

A specially selected mixture of 7 plants and bun moss for your terrarium. Plant selection will vary, but typically includes a selection from the following:

Small Terrarium Plant Selection

£14.99

A specially selected mixture of 3 plants and bun moss for your terrarium. Plant selection will vary, but typically includes a selection from the following:

Large LED Terrarium Kit – With Plants

£49.00£59.00

This kit contains everything you need to create your own perfect terrarium at home – a real focal point for any room. This also makes the perfect gift for any houseplant enthusiast or a beginner to the addictive world of terrariums!

Terrarium Kit – With Plants

£49.00£60.00

This kit contains everything you need to create your own perfect terrarium at home. A perfect gift for any houseplant enthusiast or a beginner to the addictive world of terrariums!

New Products

Extra Large Terrarium Kit

£70.00 - £90.00

This stunning kit contains everything you need to create your…

Beginner's Terrarium Kit

£49.00 - £60.00

This kit contains everything you need to create your own…

Medium Terrarium Plant Selection

£19.99

A specially selected mixture of 5 plants and bun moss…

Large Terrarium Plant Selection

£25.99

A specially selected mixture of 7 plants and bun moss…

Small Terrarium Plant Selection
£14.99
A specially selected mixture of 3 plants and bun moss...
Large LED Terrarium Kit – With Plants
£49.00£59.00
This kit contains everything you need to create your own...
Extra Large Terrarium Kit – With Plants
£70.00£90.00
This stunning kit contains everything you need to create your...
Terrarium Kit – With Plants
£49.00£60.00
This kit contains everything you need to create your own...

Workshops

We offer a range of bespoke terrarium building workshops, guiding you through the process. We’ll talk you through each step, including plant choices and aftercare to enable you to create your own mini-ecosystem that will thrive for years to come.

Our Blog

What is a terrarium?

Have you ever dreamed of having a garden but lack the space? Or perhaps you’re simply looking for a unique and low-maintenance houseplant. Enter the terrarium: a captivating world of miniature plants thriving in a glass enclosure.
Testimonials from our customers

After buying one pre-made before that my partner lives I brought this as a gift for his birthday he was so thrilled. Product was high quality and has everything you need down to the little tools! Step by step instructions really easy to follow. Also the customer service is above and beyond, I ordered in advance and requested a certain date and they delivered as requested using a courier service so could track. Perfect present and now perfect feature in our living room. Thanks so much!

Corinna

6/11/2022

Absolutely amazed how perfect everything is! The plants are gorgeous and very fresh! Everything was package with lots of love and care! Thank you so much! I will definitely be back! Xx

22/12/2022

Beautifully wrapped and packaged. Great instructions and a gorgeous glass container with cork lid. The plant variety was interesting and we are excited to see how it grows. I would definitely buy again- thank you!

Amy Gains

27/12/2021

The terrarium is absolutely fabulous, the kit is a perfect gift with everything that you need (including cute mini tools!). The customer service is outstanding, thank you so much. I shall be purchasing some more!

abzzcat

15/1/2023

I bought this as a christmas gift for my plant mad daughter, and she absolutely loved it. The plants were very well wrapped and good quality. I would definitely buy again!

Debs

30/12/2022

Everything was very carefully packaged and posted quickly. When I had a question the seller responded within minutes. The items themselves were of high quality as well. Overall an excellent experience and would recommend.

Rhodri Phillips

My husband absolutely loved this which I brought him as a Christmas present. Everything was well packaged and was sent in time for Christmas to prolong the life of the plants. Highly recommended for anyone green fingered.

Michelle Cooper

Amazing item thank you. Good seller, arrived safely and had clear & concise instructions.

Excellent item, straight forward to put together with great instructions - thank you

Emily Birmingham

Bought for my daughters birthday, she was over the moon. Customer service excellent.

Tracy

This is such a beautiful, beautiful product. The contents are stunning, and the added lighting really takes the terrarium to the next level of beauty! So so happy with the product, and packaging and presentation was exemplary! Thankyou so much!

Niall

Amazing terrarium! My husband is over the moon with his gift and got to setting it up straight away! Looks beautiful too 😊

Gemma Stout

I bought it for my Son and I am so pleased it, I want to get myself one now. It looks stunning and really exceeds my expectations. The plants were wrapped in damp paper and were in great condition when they arrived. The jar is a nice size and the light is lovely extra. There were plenty of plants and it has a lovely jungle look which my Grandson loves. Thank you!

Jane

I bought this as a gift (hence the Lego man inside - not included!). Top quality terrarium and plants. The light in the lid is a real bonus. Very thing you need really is supplied, down to the tools. Excellent.

Rebecca Handyside

FAQs

With ‘Closed bottle Terrariums’ with lids or that are sealed, water little and infrequently. Only water when the substrate, soil, or moss begins to look or feel dry. Crispy, yellowing moss and light-brown soil are good indicators of dryness. If the plants begin to slump or look limp, it may need some water, equally if the terrarium never steams up, it may also need some water. Water sparingly and with distilled or rain water is best. The benefit of a closed bottle terrarium is that it creates its own humid environment, perfect for plants that love moisture. This ‘closed’ element creates the right conditions for the terrarium to have its own water cycle in the jar and create this vibrant mini ecosystem.

Terrariums will thrive in most environments around your home or office space. Try and place your terrarium in a bright spot but not in direct sunlight. LED lights may help your plants grow and give additional growth periods for your plants in the darker seasons. Avoid placing your terrarium near a drafty window that gets too cold in the winter or too hot in the summer. Avoid a radiator or electrical appliances that give off heat. Terrariums endure best in mild stable temperatures that are well lit.

Steaming up is a normal process with terrariums and it shows that the water cycle is happening inside. If it is steaming up, it’s a good sign that there is enough water. If it stays steamed up all the time, it may have too much water, be in direct sunlight or too close to a radiator or warm appliance. If there it isn’t in direct sunlight or too close to a heat source, open the lid for a few hours until the condensation has dried up and to release some of the excess water moisture.

Leaves that touch the glass will need pruning and trimming back. If not pruned, this may cause the leaves to turn brown, rot and introduce mould into your terrarium. We recommend trimming back your plants at this stage as it also promotes new growth in your plants.

Mould and fungus growth is normal in a terrarium due to it being so humid and moist inside. Mould should be removed when spotted, it may be a sign of overcrowding of your plants, overwatering or even disease. Fungus isn’t something to be worried about, unless you find them unsightly in which case they can be removed.