Repotting guide

When & how to repot Pelargonium-Flowered Stork's Bill (Erodium pelargoniiflorum)

Also called Pelargonium-Flowered Stork's Bill, Pelargonium Stork's Bill.

More about pelargonium-flowered stork's bill

About Pelargonium-Flowered Stork's Bill

Erodium pelargoniiflorum · also called Pelargonium-Flowered Stork's Bill, Pelargonium Stork's Bill · flowering

Erodium pelargoniiflorum is a woody-based perennial native to Turkey, forming a low mound of long-stalked, apple-green, heart-shaped leaves. From early summer onwards it bears clusters of white flowers in which the two upper petals are conspicuously spotted with purple, giving the appearance of a small pelargonium bloom. It requires full sun and sharply-drained, preferably limey soil; it is notably drought-tolerant and long-lived when drainage is adequate. Not documented as toxic to cats or dogs; classified as mildly-toxic as ASPCA data for this precise species is absent.

Mature size: 25–30 cm tall, 30–40 cm wide at maturity.

Watch for — Root rot from winter wet: The woody base is susceptible to Phytophthora and Pythium in waterlogged winter soil; always plant in a raised position with grit mulch at the crown.

How to tell pelargonium-flowered stork's bill needs repotting

Repotting on a calendar is less reliable than reading the plant. For pelargonium-flowered stork's bill, 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-flowered stork's bill

Every 2–3 years, into bone-dry mix. Pelargonium-Flowered Stork's Bill's growth habit — woody-based, low-mounding perennial with semi-evergreen foliage. — sets the pace. Erodium pelargoniiflorum is a woody-based perennial native to Turkey, forming a low mound of long-stalked, apple-green, heart-shaped leaves. From early summer onwards it bears clusters of white flowers in which the two upper petals are conspicuously spotted with purple, giving the appearance of a small pelargonium bloom. It requires full sun and sharply-drained, preferably limey soil; it is notably drought-tolerant and long-lived when drainage is adequate. Not documented as toxic to cats or dogs; classified as mildly-toxic as ASPCA data for this precise species is absent.

What size pot to step pelargonium-flowered stork's bill up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Pelargonium-Flowered Stork's Bill 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-flowered stork's bill

Spring or summer, while pelargonium-flowered stork's bill 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-flowered stork's bill

Repot dry. Do not water pelargonium-flowered stork's bill 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 gritty, free-draining, neutral to alkaline 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-flowered stork's bill 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-flowered stork's bill 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-flowered stork's bill

Pelargonium-Flowered Stork's Bill wants gritty, free-draining, neutral to alkaline. A raised bed or rock garden with added limestone grit suits this plant best; it tolerates poor, thin soils but performs poorly in rich, moisture-retentive compost. 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-flowered stork's bill — frequently asked questions

How often should you repot pelargonium-flowered stork's bill?

Every 2–3 years, into bone-dry mix for pelargonium-flowered stork's bill. Repot pelargonium-flowered stork's bill every 2–3 years into a snug pot of gritty, free-draining, neutral to alkaline, 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-flowered stork's bill need?

When is the best time of year to repot pelargonium-flowered stork's bill?

Should you water pelargonium-flowered stork's bill after repotting?

No — not straight away. Repot pelargonium-flowered stork's bill 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-flowered stork's bill after repotting?

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