Repotting guide

When & how to repot Pelargonium 'Copthorne' (Pelargonium 'Copthorne')

Also called Copthorne scented pelargonium, Cedarwood geranium.

More about pelargonium 'copthorne'

About Pelargonium 'Copthorne'

Pelargonium 'Copthorne' · also called Copthorne scented pelargonium, Cedarwood geranium · herb

Pelargonium 'Copthorne' is a robust scented-leaf pelargonium with cedar-and-spice fragrant foliage and notably showy clusters of large mauve-purple flowers marked with darker feathering. An upright, vigorous tender perennial, it is valued for combining a strong aromatic leaf with one of the better floral displays among scented types, and it thrives in full sun with sharp drainage.

Mature size: Roughly 45-75 cm tall and 40-60 cm wide in a container; can be kept compact with pruning.

Watch for — Few flowers: Shade and high-nitrogen feeding produce leaves at the expense of its prized blooms. Give full sun and switch to a high-potash feed in the growing season.

How to tell pelargonium 'copthorne' needs repotting

Repotting on a calendar is less reliable than reading the plant. For pelargonium 'copthorne', watch for these signs:

Roots growing out of the drainage holes, or the rootball lifting the plant proud of the rim.
Soil that has shrunk away from the pot sides and no longer holds water.
The pot is unstable because the plant has grown top-heavy.
Old, compacted, broken-down mix that stays wet too long — for a succulent that is a rot risk, so refresh it even if the pot size is fine.

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 pelargonium 'copthorne'

Every 2–3 years, into bone-dry mix. Pelargonium 'Copthorne''s growth habit — upright, bushy and vigorous, with sturdy stems carrying aromatic leaves and prominent heads of large mauve-purple flowers. — sets the pace. Pelargonium 'Copthorne' is a robust scented-leaf pelargonium with cedar-and-spice fragrant foliage and notably showy clusters of large mauve-purple flowers marked with darker feathering. An upright, vigorous tender perennial, it is valued for combining a strong aromatic leaf with one of the better floral displays among scented types, and it thrives in full sun with sharp drainage.

What size pot to step pelargonium 'copthorne' up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Pelargonium 'Copthorne' stores water and rots in a large pot of slow-drying soil. A tight terracotta pot that dries fast is far safer than a generous plastic one. Never up-pot a succulent by several sizes.

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 pelargonium 'copthorne'

Spring or summer, while pelargonium 'copthorne' is in active growth and warm, is best — roots recover fastest then, and the plant is not sitting in cool damp soil. Avoid repotting a succulent in winter dormancy.

Step-by-step: repotting pelargonium 'copthorne'

Repot dry. Do not water pelargonium 'copthorne' for several days first. Working with dry roots and dry mix dramatically lowers the rot risk for a succulent.
Pick a snug, fast-draining pot. Choose terracotta one size up at most, with a drainage hole. Have gritty free-draining, gritty compost ready.
Tip it out and clean the roots. Slide the plant out, crumble off the old soil, and trim any black, mushy or dead roots with clean snips.
Pot into dry mix. Set pelargonium 'copthorne' at its original depth in dry gritty mix, firming gently. Do not bury the stem deeper than it was.
Wait a week before watering. Leave it completely dry and out of harsh sun for about 7 days so any damaged roots callus. Only then water lightly.

Aftercare

Keep pelargonium 'copthorne' completely dry and out of fierce sun for about a week so any nicked roots callus before they meet moisture; watering a freshly repotted succulent is the classic way to rot it. Then resume the normal lean, dry rhythm. Do not fertilise for about 3 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for pelargonium 'copthorne'

Pelargonium 'Copthorne' wants free-draining, gritty compost. Loam-based or multipurpose compost blended with grit or perlite for sharp drainage. Heavy, wet mixes promote rot at the stem base and root. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting pelargonium 'copthorne' — frequently asked questions

How often should you repot pelargonium 'copthorne'?

Every 2–3 years, into bone-dry mix for pelargonium 'copthorne'. Repot pelargonium 'copthorne' every 2–3 years into a snug pot of free-draining, gritty compost, ideally in spring or summer. Let it sit in dry soil and do not water for about a week afterwards so any nicked roots can callus. Over-potting and watering straight away is what rots succulents.

What size pot does pelargonium 'copthorne' need?

When is the best time of year to repot pelargonium 'copthorne'?

Should you water pelargonium 'copthorne' after repotting?

No — not straight away. Repot pelargonium 'copthorne' into dry mix and wait about a week before the first watering so any damaged roots callus over. Watering a freshly repotted succulent is the single most common way to rot one.

Should you fertilise pelargonium 'copthorne' after repotting?

Not immediately. Wait about 3 weeks after repotting pelargonium 'copthorne'. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.