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Repotting guide

When & how to repot Lisbon Lemon (Citrus limon 'Lisbon')

Also called Lisbon lemon.

More about lisbon lemon

About Lisbon Lemon

Citrus limon 'Lisbon' · also called Lisbon lemon · edible

A vigorous, heavy-cropping true lemon and the main commercial rival to 'Eureka'. 'Lisbon' is more upright, thornier and notably more cold- and heat-tolerant, producing tart, juicy, near-seedless fruit mostly in a concentrated winter-to-spring crop. Its hardiness and dense canopy make it the better choice for open ground in marginal citrus climates.

Mature size: About 4-7 m (12-23 ft) in the ground; kept to roughly 1-1.5 m (3-5 ft) in containers with regular pruning.

Watch for — Interveinal chlorosis: Yellowing leaves with green veins indicate iron or magnesium deficiency, common in pots and hard-water areas. Apply a citrus feed with chelated iron and magnesium.

How to tell lisbon lemon needs repotting

Repotting on a calendar is less reliable than reading the plant. For lisbon lemon, watch for these signs:

For the underlying biology of a pot-bound root system and why it stalls a plant, see our guide to spotting and fixing a root-bound plant.

How often to repot lisbon lemon

Pot on seedlings as they grow; not a perennial repot. Lisbon Lemonis grown for one season, so the question is really “how often to pot on” — keep moving it up before the roots circle. Vigorous, upright and densely branched evergreen tree, thornier and more compact in habit than 'Eureka', bearing fruit more within the canopy where it is sheltered from sun and frost..

What size pot to step lisbon lemon up to

Pot lisbon lemon on gradually — a seedling jumped straight into a huge pot sits in cold, wet, airless soil and stalls. Step up one or two sizes at a time as the roots fill each container, finishing in a large final pot or the ground. The aim is roots that never circle and never check.

Not sure of the exact diameter? Our pot size calculator takes the current pot and root spread and tells you the right next size — it deliberately recommends a single step up, never a big jump.

The best time of year to repot lisbon lemon

Pot lisbon lemon on through the active growing season, whenever roots fill the current container — there is no single date, just "before it becomes root-bound". Avoid potting on during a cold snap.

Step-by-step: repotting lisbon lemon

  1. Pot on before it is root-bound. Check lisbon lemon regularly; move it up as soon as roots reach the edge of the cell or pot, not after they have circled.
  2. Step up one or two sizes. Choose the next container up — not a giant one. Cold, wet, unused soil around a small root system stalls seedlings.
  3. Knock it out gently. Support the stem, tip the pot, and ease the rootball out without breaking it. A little teasing of circled roots at the base is fine.
  4. Pot into rich mix. Set it into fresh free-draining, slightly acidic citrus mix at the same depth (tomatoes are the exception — they can go deeper to root along the stem).
  5. Water in and grow on. Water well, keep it in good light, and resume feeding once it is established and growing again.

Aftercare

Water lisbon lemon in well and keep it in bright light; a freshly potted-on seedling can wilt for a day while roots settle, so do not overcompensate by drowning it. Do not fertilise for about 1 week — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for lisbon lemon

Lisbon Lemon wants free-draining, slightly acidic citrus mix. Loam-based or specialist citrus compost with grit or bark for drainage, ideally pH 6.0-6.5. Tolerates a range of soils in the ground provided drainage is good; avoid heavy, waterlogged ground. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting lisbon lemon — frequently asked questions

How often should you repot lisbon lemon?

Pot on seedlings as they grow; not a perennial repot for lisbon lemon. Lisbon Lemon is a seasonal crop, so you pot it on as a growing plant rather than repotting a perennial. Step seedlings up gradually into free-draining, slightly acidic citrus mix so the roots never circle the cell, ending in a large final container. A root-bound transplant stalls and never fully recovers.

What size pot does lisbon lemon need?

Pot lisbon lemon on gradually — a seedling jumped straight into a huge pot sits in cold, wet, airless soil and stalls. Step up one or two sizes at a time as the roots fill each container, finishing in a large final pot or the ground. The aim is roots that never circle and never check. Use our pot size calculator to size it from the plant's current pot and root spread.

When is the best time of year to repot lisbon lemon?

Pot lisbon lemon on through the active growing season, whenever roots fill the current container — there is no single date, just "before it becomes root-bound". Avoid potting on during a cold snap.

Can you put lisbon lemon straight into a much bigger pot?

No. Even a fast-growing lisbon lemon should only go up one pot size at a time. A vastly oversized pot holds a reservoir of wet soil the roots cannot reach, which stays cold and soggy and rots the roots — the opposite of what you wanted.

Should you fertilise lisbon lemon after repotting?

Not immediately. Wait about 1 week after repotting lisbon lemon. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.

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