DIY Terrariums: Simple Steps to a Living Glass Garden

Terrariums blend horticulture and design into self-contained ecosystems that thrive on neglect. Here’s a foolproof method to build and maintain your own.

Supplies

• Open-top glass vessel
• Activated charcoal chips
• Potting soil
• Small plants (matched to container)
• Sheet moss or decorative stone
• Long-handled planting tool

Match Plants to Container Style

Arid lovers (cacti, sedums, succulents) need wide openings for airflow.
Moisture lovers (tropical foliage, mosses, ferns) thrive in narrower vessels that trap humidity.
Choose petite specimens; leave breathing room between plants.

Build in Layers

1. Drainage: 1–2″ charcoal chips.
2. Soil: Fill ⅓ with potting mix, firm gently.
3. Plants: Position, backfill around roots, firm.
4. Top dress: Moss or stones between plants. Water until moisture shows at bottom.

Ongoing Care

• Water sparingly — only when dry (arid) or via mister (tropical).
• Prune with scissors as needed.
• Bright indirect light only — direct sun cooks the interior.

Make several: an all-succulent design, a mossarium, a miniature scene. Personal, portable, and nearly foolproof.