MossBoss DIY closed terrarium kit without glass with substrates, moss, plants and terrarium materials

DIY *Closed* Terrarium Kit (No Glass)

S — 10/15cm Ø / 1.0 L
€19,90
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MossBoss DIY closed terrarium kit without glass with substrates, moss, plants and terrarium materials
  • MossBoss DIY closed terrarium kit without glass with substrates, moss, plants and terrarium materials
  • Комплект за затворен терариум без стъкло с растения и инструменти
  • Малък комплект за затворен терариум без стъкло
  • Gardening supplies including plants, pots, and tools on a table with branded boxes in the background.
  • Terarium komplekt bez staklen sad
  • Moss and plant packaging with 'MOSSBOSS' branding and plant materials.
  • Как да си направиш терариум в 4 стъпки
  • Как да създадеш мосариум с нашите комплекти
  • DIY Closed Terrarium Kit (No Glass)
DIY *Closed* Terrarium Kit (No Glass)

DIY *Closed* Terrarium Kit (No Glass)

€19,90
Size
  • Natural variation is expected.
  • Balance matters more than precision.
  • Live plants inside — unpack and assemble within 48 hours of delivery.
Mossy: A small choice. A big moment of care.
Low stock
What’s included

All the essentials for a balanced, self-sustaining closed terrarium — designed to fit your own glass container (with lid).

  • 2–3 carefully selected live plants suited for closed terrariums (species vary by season and availability – always fresh and healthy)
  • Live moss – the soft green foundation
  • Drainage layer of LECA (expanded clay)
  • Activated charcoal – natural air purifier inside the system
  • Balanced soil mix specially for closed terrariums
  • Natural decorative elements: quartz sand, white gravel, small pebbles
  • Fine mesh to separate layers cleanly
  • 4 small tools for easy and precise placement
  • Printed guide – step-by-step building instructions + long-term care notes

Note: Plants and moss are chosen according to season and stock to arrive in peak condition.
Assemble within 48 hours of receiving the kit.
Your own glass container (with secure lid) is required – aim for 1.5–3 liters for best balance with these amounts.
Description
Everything you need to build (or refresh) your own closed terrarium – minus the glass.Use your favorite jar, vase, or container with a lid. This kit provides all the living and natural layers: live plants, moss, drainage, charcoal, soil, decorative elements, tools, and clear step-by-step instructions.Perfect for beginners who already have a vessel, or for anyone wanting to give an existing terrarium new life. The process stays slow, guided, and unhurried — just layers finding balance together.Note on your container Your own glass container (with a tight-fitting lid) is required. The kit is optimized for these sizes (as in the full kit versions):
  • S — Ø 10–15 cm / ≈ 1.0 L
  • L — Ø 15–20 cm / 1.5–2.5 L
  • XL — Ø 20–25 cm / 2.5–4.5 L
These amounts ensure the best water cycle, humidity, and growth balance.This kit contains live plants and moss – please open the package and assemble within 48 hours of delivery. Live elements thrive best when they breathe soon after arrival.Choose your container. Layer it slowly. Watch it settle. The small world will do the rest.
Shipping

This kit (the version without glass container) is carefully packed to keep the live plants and moss safe and protected during transit. All dry materials (LECA, charcoal, soil, sand, gravel, mesh, tools) are secured so nothing shifts or spills.

Live plants & moss are prepared fresh shortly before shipping. They may show mild stress after travel (slight wilting or softer leaves) – this is completely normal and usually resolves within 2–5 days once assembled in your container with proper humidity and indirect light.

Upon arrival
Please open the package right away and check everything:

  • Live plants and moss should look fresh (even if slightly relaxed).
  • If you notice serious damage (broken stems, rotting parts, or moss in poor condition), contact us within 24 hours with clear photos. We’ll take care of it quickly.

Assembly
Open and assemble the terrarium within 48 hours of delivery – the live elements need fresh air and placement in your container as soon as possible to recover and thrive.

Returns
Because this kit contains live plants and moss, it does not qualify for the standard 14-day return period (per consumer protection law exceptions for perishable / quickly deteriorating goods).
We review returns case-by-case only in situations of proven shipping damage or our error (wrong plants sent, damaged in transit). If that happens, write to us immediately – we’ll find the best solution together.

Shipping summary

  • Courier: Econt, Speedy or other partner (you choose at checkout)
  • Delivery time: usually 1–2 working days within Bulgaria
  • No special requirements – no glass means no need for express or temperature-controlled shipping

Order with peace of mind.
The plants arrive fresh and ready to adapt to your space.
We handle the journey.
You handle the gentle time that follows.

🌿 Arrives alive.
Settles slowly.
Grows with you.
Care

Once assembled in your sealed container, this closed system mostly cares for itself. It asks for observation more than daily work.

Light
Bright, indirect light.
Place your container where it gets plenty of natural daylight without direct sun – north or east-facing windowsill, or 1–2 meters from south-facing glass is ideal.
Direct sun can overheat the interior and upset the balance.

Water
Very little, very rarely.
The soil should remain lightly moist, never soggy.
Condensation on the glass walls usually provides enough moisture. Water only if the interior stays dry for weeks and plants show thirst (softening or curling leaves).

Placement
Indoors, in a peaceful spot.
Keep away from heaters, radiators, air conditioners, drafts, or extreme temperature swings.
18–24 °C feels right — same as your comfortable room.

The most important part
Observe more than intervene.
Check the condensation morning and evening.
Notice how plants respond over days and weeks.
Gentle mist on the glass and steady green growth mean balance is holding.
If too dry or too wet appears — adjust gently, with patience.

This isn’t about constant tending.
It’s about giving time.
And time is what makes it thrive.
Green cartoon character with large eyes and a tie on a white background Mossy Note

Mossy trusts systems that take care of themselves.

Once closed, it’s often best to simply observe.

Pairs well with

Bell Jar / Cloche

Bell Jar / Cloche

€11,90
Cylindrical Glass Terrarium Containers with Cork Stoppers

Cylindrical Glass Terrarium Containers with Cork Stoppers

€1,90
A one-of-a-kind glass container selected for unique shape, character, or age.

Vintage / Limited Glass

€11,90
Round Glass Terrarium Container with Cork Stopper

Round Glass Terrarium Container with Cork Stopper

€10,90
Optional ecosystem helper
Close up of Springtails (Terrarium Cleanup Crew)

Springtails (Terrarium Cleanup Crew)

Live terrarium organisms

Commonly used in bioactive setups

€9,90
OBSERVE • RECORD • UNDERSTAND
MossBoss Explorer Journal with a terrarium – digital terrarium journal

MossBoss Explorer Journal – Terrarium Journal

Observe your living community and record the changes you notice over time.

€4,90

Mossy notices that balance often appears after the first few days.

— Mossy
Close-up of a green moss-covered surface
View our guides

Frequently asked questions
Can I make it with children or with zero experience?

Yes – that’s exactly who it’s for. There is no mistake you can’t recover from. Children love arranging the layers and watching things grow. If something isn’t perfect – it’s still fine. This is a process, not a test.
How long will the terrarium live?

Years – when conditions are right. Many MossBoss customers have terrariums thriving for 2–4 years and still growing. Plants change slowly, moss spreads, balance holds. It’s not a one-time thing.
Will everything die if I forget to water it?

No. A closed terrarium is designed exactly for that – moisture circulates inside and the system mostly takes care of itself for months. Many people check once every 4–6 weeks and add just 1–2 tablespoons of water if needed. Forgetting is not a disaster.
How often do I need to water – every day?

Almost never. After assembly, watch the glass: regular morning and evening condensation means everything is working. If it stays completely dry for weeks, add a little water. Most owners do this once every 1–3 months.
If mould / white fuzz appears – is it over?

Not at all. A light white coating in the first 1–3 weeks is normal (it’s a helpful fungus). Just remove the lid for 1–2 days to let it air out. If it’s too much, gently remove the affected part with tweezers. The system recovers quickly.
Where exactly should I place it – in sun or shade?

Bright, indirect light is ideal – near a window with a sheer curtain, 1–2 metres from the glass, no direct sun. Direct sunlight can overheat the inside. A desk, shelf or table in a naturally lit room works beautifully.
Can I put it in the bedroom / bathroom / on my desk?

Yes – anywhere with decent light and not too dark. Bathrooms (humid) are wonderful for closed terrariums. Desks are perfect for daily watching. Bedrooms – a quiet companion that asks for almost nothing.
If the plants look limp / yellow in the beginning – is that normal?

Yes, completely normal. Plants need 7–14 days to adjust to the new environment. Some leaves may yellow or drop – that’s part of settling in. Give them time. Most wake up stronger after 2–3 weeks.
Do I need to open the lid and ventilate?

Not usually. A closed terrarium is built to function sealed. If you see too much condensation or any odd smell – open for 1–2 days. Otherwise, leave it closed.
If I mess up the layer order or add too much water – will it fix itself?

Almost always, yes. If it’s too wet – open for a few days to dry out. If layers are mixed – the system adapts. Start calmly – over time you’ll see what works best in your space.