Repotting guide

When & how to repot Crataegus laevigata 'Paul's Scarlet' (Crataegus laevigata 'Paul's Scarlet')

Also called Paul's Scarlet Hawthorn, Double Red Hawthorn.

More about crataegus laevigata 'paul's scarlet'

About Crataegus laevigata 'Paul's Scarlet'

Crataegus laevigata 'Paul's Scarlet' · also called Paul's Scarlet Hawthorn, Double Red Hawthorn · flowering

'Paul's Scarlet' is a small, exceptionally hardy hawthorn smothered in double, deep rose-pink to scarlet flowers in late spring. Tough, thorny and wind-firm, it tolerates pollution, exposure and poor soils, making a reliable specimen or street tree. The double blooms set little fruit, so it is a flowering rather than berrying form.

Mature size: Around 5-8 m tall and 5-8 m wide at maturity, slow to moderate in growth and easily kept to size.

Watch for — Hawthorn leaf spot / scab: Fungal leaf spot and scab (Diplocarpon, Venturia) can blotch foliage and cause early leaf drop in wet summers. Rake up fallen leaves and improve airflow; rarely threatens an established tree.

How to tell crataegus laevigata 'paul's scarlet' needs repotting

Repotting on a calendar is less reliable than reading the plant. For crataegus laevigata 'paul's scarlet', 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 crataegus laevigata 'paul's scarlet' 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 crataegus laevigata 'paul's scarlet'

Every 2–3 years; top-dress in the in-between years. Crataegus laevigata 'Paul's Scarlet''s growth habit — small, rounded deciduous tree with a dense, twiggy, thorny crown; often grown as a single-stemmed standard for streets and gardens. — sets the pace. 'Paul's Scarlet' is a small, exceptionally hardy hawthorn smothered in double, deep rose-pink to scarlet flowers in late spring. Tough, thorny and wind-firm, it tolerates pollution, exposure and poor soils, making a reliable specimen or street tree. The double blooms set little fruit, so it is a flowering rather than berrying form.

What size pot to step crataegus laevigata 'paul's scarlet' up to

Move up exactly one pot size. A heavy crataegus laevigata 'paul's scarlet' 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 crataegus laevigata 'paul's scarlet'

Early spring, just as new growth restarts, is the ideal window for crataegus laevigata 'paul's scarlet'. 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 crataegus laevigata 'paul's scarlet'

Consider top-dressing first. If crataegus laevigata 'paul's scarlet' 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 almost any well-drained soil, acid to alkaline 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 crataegus laevigata 'paul's scarlet' in the same spot and light — moving and repotting at once is what makes it drop leaves.

Aftercare

Leave crataegus laevigata 'paul's scarlet' 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 crataegus laevigata 'paul's scarlet'

Crataegus laevigata 'Paul's Scarlet' wants almost any well-drained soil, acid to alkaline. Highly adaptable, growing on clay, chalk, sand and loam across a wide pH range. Tolerates compacted and impoverished urban soils; only persistently waterlogged ground is a problem. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting crataegus laevigata 'paul's scarlet' — frequently asked questions

How often should you repot crataegus laevigata 'paul's scarlet'?

Every 2–3 years; top-dress in the in-between years for crataegus laevigata 'paul's scarlet'. Fully repot crataegus laevigata 'paul's scarlet' 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 almost any well-drained soil, acid to alkaline. It is heavy and hates being moved, and a vastly oversized pot holds water against the roots and rots them.

What size pot does crataegus laevigata 'paul's scarlet' need?

When is the best time of year to repot crataegus laevigata 'paul's scarlet'?

Should you top-dress or fully repot crataegus laevigata 'paul's scarlet'?

For a big, heavy crataegus laevigata 'paul's scarlet', 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 crataegus laevigata 'paul's scarlet' after repotting?

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