Does Repotting Anthuriums Into Larger Pots Increase Flower Size? Division Is the Real Key

Pot Size vs. Flower Size

Larger pots alone do not increase flower size. Anthurium flower size is genetically determined by cultivar.

What Actually Works

Division rejuvenates the plant. When crowded, the plant declines — smaller leaves, fewer/spathes. Dividing offshoots with roots restores vigor and typical bloom size.

Division Steps

1. Remove plant; identify offshoots with own root mass (golf ball size).
2. Sever with sterile knife (10% bleach dip between cuts).
3. Pot each in well-draining aroid mix.
4. High humidity, bright indirect light, even moisture.

When to Divide

Spring to early summer. If blooms are smaller than when purchased, it’s time.

Note on Cultivars

Some anthuriums (e.g., ‘Small Talk’) are naturally small-flowered. No cultural practice changes this.