Repotting guide

When & how to repot Broad-Leaved Lime (Tilia platyphyllos)

Also called Broad-Leaved Lime, Large-Leaved Linden, Bigleaf Linden.

More about broad-leaved lime

About Broad-Leaved Lime

Tilia platyphyllos · also called Broad-Leaved Lime, Large-Leaved Linden · flowering

A fast-growing, broadly columnar European native that can reach 40 m, bearing large asymmetric heart-shaped leaves and pendulous clusters of fragrant pale-yellow flowers in midsummer. Suited to large gardens and parks. Tolerates hard pruning and a range of soils, but is prone to aphid infestation and basal suckering.

Mature size: Up to 40 m tall (130 ft), 15–20 m wide (50–65 ft)

Watch for — Basal suckering: Produces prolific root suckers around the trunk base that, if left, develop into thickets. Remove suckers by pulling or cutting flush with the root when they appear in spring and summer.

How to tell broad-leaved lime needs repotting

Repotting on a calendar is less reliable than reading the plant. For broad-leaved lime, watch for these signs:

Thick roots out of the drainage holes, or circling the surface and lifting the plant.
The pot dries out unusually fast and broad-leaved lime wilts between waterings it used to shrug off.
The plant is visibly top-heavy and tips over easily.
Stalled growth and small new leaves over a full season — though with a big specimen, top-dressing is often the better first response before a full repot.

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 broad-leaved lime

Every 2–3 years; top-dress in the in-between years. Broad-Leaved Lime's growth habit — broadly columnar to rounded; fast-growing deciduous tree producing basal suckers; may need sucker removal to maintain a clean trunk — sets the pace. A fast-growing, broadly columnar European native that can reach 40 m, bearing large asymmetric heart-shaped leaves and pendulous clusters of fragrant pale-yellow flowers in midsummer. Suited to large gardens and parks. Tolerates hard pruning and a range of soils, but is prone to aphid infestation and basal suckering.

What size pot to step broad-leaved lime up to

Move up exactly one pot size. A heavy broad-leaved lime dropped into a vastly bigger pot sits in a reservoir of wet soil its roots cannot reach, which rots them and destabilises the plant. In the years between repots, lift off and replace the top 3–5 cm of soil (top-dressing) instead — it refreshes nutrients without the shock of a full repot.

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 broad-leaved lime

Early spring, just as new growth restarts, is the ideal window for broad-leaved lime. The plant is moving into its strongest growth phase and re-roots into fresh soil quickly. Avoid repotting in winter dormancy or, for flowering plants, while it is in bud or bloom — recovery is slowest then and you risk dropping the flowers.

Step-by-step: repotting broad-leaved lime

Consider top-dressing first. If broad-leaved lime is not badly root-bound, scrape off and replace the top 3–5 cm of soil instead — far less shock for a big plant that hates moving.
Get help and one size up. For a full repot, choose a pot just one size larger. A heavy plant needs two people and a stable, free-draining pot.
Ease it out on its side. Lay the plant down, slide the pot off, and gently loosen the outer roots. Do not bare-root a mature specimen.
Repot at the same depth. Add fresh moist, well-drained loam; tolerates clay and chalk beneath and around the rootball, keeping the original soil line. Firm it so the trunk is stable and upright.
Water and leave it put. Water thoroughly, then leave broad-leaved lime in the same spot and light — moving and repotting at once is what makes it drop leaves.

Aftercare

Leave broad-leaved lime in exactly the same spot and light it was in before — moving and repotting at the same time is what makes a big specimen drop leaves. Water it in well, then let the top of the soil dry before watering again so the larger volume of fresh soil does not stay sodden. Do not fertilise for about 4 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for broad-leaved lime

Broad-Leaved Lime wants moist, well-drained loam; tolerates clay and chalk. Grows in sandy, loamy, or clay soils at pH 5.5–8.0. More tolerant of alkaline and chalk soils than many Tilia species. Ensure good drainage to prevent root rot. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting broad-leaved lime — frequently asked questions

How often should you repot broad-leaved lime?

Every 2–3 years; top-dress in the in-between years for broad-leaved lime. Fully repot broad-leaved lime only every 2–3 years; in the in-between years just top-dress the top 3–5 cm of soil. Step up one pot size in spring with moist, well-drained loam; tolerates clay and chalk. It is heavy and hates being moved, and a vastly oversized pot holds water against the roots and rots them.

What size pot does broad-leaved lime need?

When is the best time of year to repot broad-leaved lime?

Should you top-dress or fully repot broad-leaved lime?

For a big, heavy broad-leaved lime, top-dressing — replacing the top 3–5 cm of soil — is the gentler option most years, with a full repot only every 2–3 years. A mature specimen sulks and drops leaves when fully repotted, so do it as rarely as the roots allow.

Should you fertilise broad-leaved lime after repotting?

Not immediately. Wait about 4 weeks after repotting broad-leaved lime. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.