Repotting guide

When & how to repot Tilia tomentosa 'Petiolaris' (Tilia tomentosa 'Petiolaris')

Also called Weeping Silver Lime, Pendent Silver Lime.

More about tilia tomentosa 'petiolaris'

About Tilia tomentosa 'Petiolaris'

Tilia tomentosa 'Petiolaris' · also called Weeping Silver Lime, Pendent Silver Lime · flowering

The weeping silver lime is an elegant large deciduous tree with arching, pendulous branches and dark leaves backed in silvery-white felt that shimmer in the breeze. Its richly scented late-summer flowers draw pollinators. Tolerant of pollution and heat, it makes a stately specimen. Tilia is ASPCA-listed as non-toxic to dogs and cats.

Mature size: Typically 15-25 m tall and 10-15 m wide; established specimens form a broad, billowing weeping canopy.

How to tell tilia tomentosa 'petiolaris' needs repotting

Repotting on a calendar is less reliable than reading the plant. For tilia tomentosa 'petiolaris', 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 tilia tomentosa 'petiolaris' 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 tilia tomentosa 'petiolaris'

Every 2–3 years; top-dress in the in-between years. Tilia tomentosa 'Petiolaris''s growth habit — a large deciduous tree forming a broad, domed to rounded crown of strongly arching, pendulous branches that often sweep toward the ground. moderately vigorous; the weeping outline becomes more pronounced with age. — sets the pace. The weeping silver lime is an elegant large deciduous tree with arching, pendulous branches and dark leaves backed in silvery-white felt that shimmer in the breeze. Its richly scented late-summer flowers draw pollinators. Tolerant of pollution and heat, it makes a stately specimen. Tilia is ASPCA-listed as non-toxic to dogs and cats.

What size pot to step tilia tomentosa 'petiolaris' up to

Move up exactly one pot size. A heavy tilia tomentosa 'petiolaris' 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 tilia tomentosa 'petiolaris'

Early spring, just as new growth restarts, is the ideal window for tilia tomentosa 'petiolaris'. 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 tilia tomentosa 'petiolaris'

Consider top-dressing first. If tilia tomentosa 'petiolaris' 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 fertile, moist, well-drained loam 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 tilia tomentosa 'petiolaris' in the same spot and light — moving and repotting at once is what makes it drop leaves.

Aftercare

Leave tilia tomentosa 'petiolaris' 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 tilia tomentosa 'petiolaris'

Tilia tomentosa 'Petiolaris' wants fertile, moist, well-drained loam. Adaptable to clay, loam and chalk across a wide pH range, including alkaline soils. Performs best on deep, fertile, moisture-retentive ground and dislikes permanent waterlogging. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting tilia tomentosa 'petiolaris' — frequently asked questions

How often should you repot tilia tomentosa 'petiolaris'?

Every 2–3 years; top-dress in the in-between years for tilia tomentosa 'petiolaris'. Fully repot tilia tomentosa 'petiolaris' 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 fertile, moist, well-drained loam. It is heavy and hates being moved, and a vastly oversized pot holds water against the roots and rots them.

What size pot does tilia tomentosa 'petiolaris' need?

When is the best time of year to repot tilia tomentosa 'petiolaris'?

Should you top-dress or fully repot tilia tomentosa 'petiolaris'?

For a big, heavy tilia tomentosa 'petiolaris', 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 tilia tomentosa 'petiolaris' after repotting?

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