Reviving Potted Citrus Trees: Rootstock Suckers and Care

An orange and lemon tree in Beirut, thriving for years, suddenly declined after the orange sent up a thorny spike. Both trees yellowed and dropped leaves. The owner wondered if they were root-bound.

Identifying the Thorny Spike

Citrus trees are typically grafted: a sturdy, thorny rootstock supports a productive, fruiting scion. The thorny spike is likely a rootstock sucker—if left unchecked, it will drain energy from the desired variety.

Action: Prune the spike back to its base and continue removing any regrowth.

Essential Citrus Care

• Sun: Full sun all day is non-negotiable.
• Drainage: Pots must have holes and saucers; never let water stand.
• Watering: Allow soil to dry between waterings; avoid constant moisture.
• Fertilizer: Apply citrus-specific fertilizer monthly.

Root-Bound Concerns

If pots are large and growth has stalled, check for circling roots. Repot only if necessary, moving up just 2 inches in diameter, using well-draining mix.

With the sucker removed and care optimized, both trees should recover and resume fruiting.