Repotting a Rubber Tree: Pot Size, Light Needs & Common Mistakes

Rubber Tree (Ficus elastica) Repotting Done Right

Roots exiting drainage holes don't automatically mean "repot now." Only repot if you want the plant larger. Here's how to do it safely.

Pot Size Rule

New pot = 2 inches wider in diameter than current pot. No larger. Oversized pots hold excess moisture, causing root rot—the #1 rubber tree killer.

Light Reality Check

Rubber trees need bright, indirect light—not "little lighting." Without it, they stretch, drop lower leaves, and decline. Options:

• Unobstructed south/west window (ideal).
• 4-tube fluorescent fixture, 12–18 inches above plant, 14+ hrs/day.
• LED grow light with full spectrum, similar setup.

Repotting Steps

1. Water 1 day before to ease removal.
2. Gently loosen root ball. Trim only circling/mushy roots.
3. Use well-draining mix: 2 parts peat, 1 part perlite, 1 part bark.
4. Plant at same depth. Water thoroughly. No fertilizer for 4–6 weeks.

Maintaining Size

To keep it compact: root-prune annually (remove ⅓ roots, refresh soil in same pot) and prune top growth in spring.