20. Artisanal Concrete & Glass Terrarium Planter
An architectural tabletop terrarium built from an organic cast-concrete base with an open glass cylinder creates a mini enclosed habitat for succulents, moss, or air plants.
- What This Idea Means: A modern terrarium combining raw, sturdy cast concrete with crystal-clear botanical display glass.
- Materials Needed:
- Quick-curing high-strength white cement mix
- Open-ended clear glass cylinder vase (approx. 5 inches wide, 6 inches tall)
- Round plastic tray mold (6 inches wide, 2 inches deep)
- Horticultural activated charcoal, fine river stones, and potting medium
- Selected mini succulents, air plants (Tillandsia), or preserved mood moss
- How to Make It:
- Base Casting: Mix white cement to a creamy consistency and pour into the round plastic tray mold.
- Seating the Glass: While concrete is still wet, press the rim of your glass cylinder 1/2 inch into the center of the concrete. Tap to settle and remove bubbles. Let cure for 48 hours.
- Demolding: Carefully remove the plastic mold from the hardened concrete base.
- Layering Drainage: Add a 1/2-inch layer of small river stones to the bottom interior, followed by a light layer of activated charcoal to keep the soil fresh.
- Planting: Add specialty potting mix and nestle your air plants, mini succulents, and lush green moss into the vessel.
- Tips & Variations:
- Tip: Lightly coat the glass cylinder’s bottom rim with petroleum jelly before pressing into concrete for cleaner release lines.
- Variation: Embed crushed sea glass or brass shavings into the concrete base before curing for subtle sparkle.
