Kentia Palm Repotting: When Roots Emerge, Don't Rush to Repot

Question

Hi, regarding repotting kentias: what to do when root system balls out bottom of pot? Want to transplant—what do you recommend? Aware of soil needs but concerned about pot size and root ball trimming. Any advice? Thanks, Mel

Answer

Hi Mel, mature Kentias rarely need repotting—yours may not need it or be wise. If repotting for aesthetics, leave in existing pot inside decorative planter without disturbing roots. You didn't mention reason, so can't say if good idea. Unnecessary repotting is most common cause of plant failure.

If repotting with root mass at bottom: loosen mass, trim some roots. Use pot one size larger. Layer potting mix in bottom, set rootball on top. Rootball top 1-2" from rim. Fill sides with mix. Do NOT put mix on top of rootball. If rootball sits too low, add mix underneath, not on top. Use same mix type already in use.

I've written articles on palms and repotting I'll email free to anyone requesting at wcreed@HorticulturalHelp.com.

Follow-up: Main reason: seem outgrown, roots balling externally. Concerned for future health as traveling for a year, leaving to friend. They're beautiful, never failed. (Even have names!) If repotted, why not put mix on top of rootball?

"Seem outgrown" and roots from drain holes aren't compelling reasons. Most sources promote repotting at root emergence or every few years—incorrect. My repotting article explains in detail.

Your Kentias are healthy—no reason to repot. Massed roots didn't happen overnight; plants doing fine. Don't fix what's not broken. If you do, you hand problems to your friend.

Exposed stems/roots callous over or develop bark covering adapting to air. If subsequently covered with damp soil, it rots—covering adapted to dry air, not wet soil. Think of exposed tree roots in nature—nature doesn't cover them. Soil added only in root zone adapted to moisture.

Will Creed, Interior Landscaper
Horticultural Help, NYC