Repotting guide

When & how to repot Dawn Redwood 'Ogon' (Metasequoia glyptostroboides 'Ogon')

Also called Ogon dawn redwood, golden metasequoia.

More about dawn redwood 'ogon'

About Dawn Redwood 'Ogon'

Metasequoia glyptostroboides 'Ogon' · also called Ogon dawn redwood, golden metasequoia · flowering

The original Japanese golden dawn redwood, selected in the 1970s and sold in the West largely as 'Gold Rush' (the two are the same clone). This deciduous living-fossil conifer carries feathery sprays of glowing yellow needles that deepen through summer in sun and turn rich orange-brown in autumn. Fast, upright and luminous as a specimen.

Mature size: More restrained than the green species, reaching about 10-15 m tall and 4-6 m wide over many years.

How to tell dawn redwood 'ogon' needs repotting

Repotting on a calendar is less reliable than reading the plant. For dawn redwood 'ogon', 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 dawn redwood 'ogon' 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 dawn redwood 'ogon'

Every 2–3 years; top-dress in the in-between years. Dawn Redwood 'Ogon''s growth habit — fast-growing deciduous conifer of narrowly conical, strongly upright form with a fluted, buttressed trunk as it ages. — sets the pace. The original Japanese golden dawn redwood, selected in the 1970s and sold in the West largely as 'Gold Rush' (the two are the same clone). This deciduous living-fossil conifer carries feathery sprays of glowing yellow needles that deepen through summer in sun and turn rich orange-brown in autumn. Fast, upright and luminous as a specimen.

What size pot to step dawn redwood 'ogon' up to

Move up exactly one pot size. A heavy dawn redwood 'ogon' 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 dawn redwood 'ogon'

Early spring, just as new growth restarts, is the ideal window for dawn redwood 'ogon'. 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 dawn redwood 'ogon'

Consider top-dressing first. If dawn redwood 'ogon' 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 deep, moist, fertile, slightly acidic to neutral soil 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 dawn redwood 'ogon' in the same spot and light — moving and repotting at once is what makes it drop leaves.

Aftercare

Leave dawn redwood 'ogon' 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 dawn redwood 'ogon'

Dawn Redwood 'Ogon' wants deep, moist, fertile, slightly acidic to neutral soil. Best in humus-rich, reliably moist loam; tolerates wet and boggy margins. Struggles on dry, thin or strongly alkaline chalk, which induces leaf yellowing. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting dawn redwood 'ogon' — frequently asked questions

How often should you repot dawn redwood 'ogon'?

Every 2–3 years; top-dress in the in-between years for dawn redwood 'ogon'. Fully repot dawn redwood 'ogon' 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 deep, moist, fertile, slightly acidic to neutral soil. It is heavy and hates being moved, and a vastly oversized pot holds water against the roots and rots them.

What size pot does dawn redwood 'ogon' need?

When is the best time of year to repot dawn redwood 'ogon'?

Should you top-dress or fully repot dawn redwood 'ogon'?

For a big, heavy dawn redwood 'ogon', 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 dawn redwood 'ogon' after repotting?

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