Repotting guide

When & how to repot Cantabrian Draba (Draba dedeana)

Also called Cantabrian Draba, Dedean's Draba, Spanish Whitlow Grass.

More about cantabrian draba

About Cantabrian Draba

Draba dedeana · also called Cantabrian Draba, Dedean's Draba · flowering

Draba dedeana is a diminutive cushion-forming perennial from limestone rock faces and crevices in the Cantabrian Mountains and Pyrenees of Spain, where it grows at subalpine to alpine elevations. It forms tiny, hard, shiny-green rosettes of toothed leaves and bears disproportionately large, pure white flowers — often the first rockery Draba to bloom in late winter or very early spring. Gritty, well-drained soil and full sun are essential; it is an excellent candidate for a trough or alpine house where winter rainfall can be managed. Toxicity data are absent from the ASPCA database; classified as mildly-toxic as a precaution.

Mature size: 2–5 cm tall and 8–15 cm across.

How to tell cantabrian draba needs repotting

Repotting on a calendar is less reliable than reading the plant. For cantabrian draba, 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 cantabrian draba

Every 2–3 years, into bone-dry mix. Cantabrian Draba's growth habit — hard cushion-forming evergreen perennial with compact rosettes of shiny, toothed leaves. — sets the pace. Draba dedeana is a diminutive cushion-forming perennial from limestone rock faces and crevices in the Cantabrian Mountains and Pyrenees of Spain, where it grows at subalpine to alpine elevations. It forms tiny, hard, shiny-green rosettes of toothed leaves and bears disproportionately large, pure white flowers — often the first rockery Draba to bloom in late winter or very early spring. Gritty, well-drained soil and full sun are essential; it is an excellent candidate for a trough or alpine house where winter rainfall can be managed. Toxicity data are absent from the ASPCA database; classified as mildly-toxic as a precaution.

What size pot to step cantabrian draba up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Cantabrian Draba 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 cantabrian draba

Spring or summer, while cantabrian draba 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 cantabrian draba

Repot dry. Do not water cantabrian draba 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, well-drained alkaline to neutral loam 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 cantabrian draba 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 cantabrian draba 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 cantabrian draba

Cantabrian Draba wants gritty, well-drained alkaline to neutral loam. Naturally grows on limestone; a mix of loam and coarse grit with a pH of 7.0–8.0 suits it well, replicating its native calcareous substrate. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting cantabrian draba — frequently asked questions

How often should you repot cantabrian draba?

Every 2–3 years, into bone-dry mix for cantabrian draba. Repot cantabrian draba every 2–3 years into a snug pot of gritty, well-drained alkaline to neutral loam, 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 cantabrian draba need?

When is the best time of year to repot cantabrian draba?

Should you water cantabrian draba after repotting?

No — not straight away. Repot cantabrian draba 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 cantabrian draba after repotting?

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