Floral Foam Mechanics for a 4.5-Inch Glass Cylinder

A narrow cylinder vase needs a "top-down" design—foam sits on the vase, not inside.

Lomey Tray Method (Standard Pro Approach)

Buy a lomey dish/tray (floral supply) with diameter matching your vase top.
Cut wet foam brick to fit tray; tape securely (cross-hatch with waterproof tape).
Place tray on vase rim. Design arrangement in foam.
Fill vase with decorative stems (lily grass, orchid stems, curly willow) or colored water/beads.

Melon-ball colored dry foam (orange, pink, lime) and fill the cylinder for a modern look. Then place a foam-topped tray on top for flowers.

Local floral wholesaler (best for lomey trays).
Craft stores (Michaels, Joann) – floral section carries foam, tape, sometimes trays.
Online: Floral Supply Syndicate, Oasis Floral Products, Mayesh.

Measure your vase opening precisely before ordering trays.

Floral Arrangements: Flower Ideas for a Retro 60s Glass Vase; Why Apples Won’t Sink in Water-Filled Vases (and What to Use Instead); Securing White Roses in 60cm Cylinder Vases: Foam Spheres vs. Bouquet Holders; Fruit and Floral Arrangements: Protecting Gerberas from Ethylene Gas; Building Tall Cylinder Arrangements: Foam Bowl vs. Water Only; Securing Floral Foam in a Deep Paper Mache Pot; Topping 24-Inch Tall Vases: Foam Cube vs. Nested Vase; Tall Vase Arrangements Without Full Foam Fill; Silk Arrangement for a 25-Inch Grape-Motif Metal Floor Vase; Lemon-Lined Square Vase: Nested Vase or Foam Block

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