Repotting guide

When & how to repot 'French Breakfast' Radish (Raphanus sativus 'French Breakfast')

Also called French Breakfast radish.

More about 'french breakfast' radish

About 'French Breakfast' Radish

Raphanus sativus 'French Breakfast' · also called French Breakfast radish · edible

'French Breakfast' is a classic heirloom radish with elongated cylindrical roots, rosy-red shoulders and crisp white tips, and a mild, mellow flavour. One of the fastest crops in the garden, it matures in just 21-30 days, making it ideal for succession sowing and intercropping. It needs cool weather and turns hot and pithy in summer heat.

Mature size: Roots 5-7 cm (2-3 in) long; tops around 15 cm (6 in) tall.

Watch for — Pithy, hot roots: Left too long in the ground or grown in heat, roots become spongy, hollow and sharply pungent. Harvest promptly at 3-4 weeks and grow in cool weather.

How to tell 'french breakfast' radish needs repotting

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

Roots circling the bottom of the module or pot, or poking out of the drainage holes.
The seedling dries out within a day and growth has visibly stalled.
Roots are white and matted in a tight spiral when you tip the plant out.
It has outgrown its current container for the stage of the season — pot 'french breakfast' radish on before it becomes hard root-bound.

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 'french breakfast' radish

Pot on seedlings as they grow; not a perennial repot. 'French Breakfast' Radishis grown for one season, so the question is really “how often to pot on” — keep moving it up before the roots circle. Small rosette of green leaves above a slim, elongated taproot that sits half-out of the soil. A biennial grown as a fast annual; bolts quickly under heat or long days..

What size pot to step 'french breakfast' radish up to

Pot 'french breakfast' radish on gradually — a seedling jumped straight into a huge pot sits in cold, wet, airless soil and stalls. Step up one or two sizes at a time as the roots fill each container, finishing in a large final pot or the ground. The aim is roots that never circle and never check.

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 'french breakfast' radish

Pot 'french breakfast' radish on through the active growing season, whenever roots fill the current container — there is no single date, just "before it becomes root-bound". Avoid potting on during a cold snap.

Step-by-step: repotting 'french breakfast' radish

Pot on before it is root-bound. Check 'french breakfast' radish regularly; move it up as soon as roots reach the edge of the cell or pot, not after they have circled.
Step up one or two sizes. Choose the next container up — not a giant one. Cold, wet, unused soil around a small root system stalls seedlings.
Knock it out gently. Support the stem, tip the pot, and ease the rootball out without breaking it. A little teasing of circled roots at the base is fine.
Pot into rich mix. Set it into fresh loose, friable, well-drained loam, ph 6.0-7.0 at the same depth (tomatoes are the exception — they can go deeper to root along the stem).
Water in and grow on. Water well, keep it in good light, and resume feeding once it is established and growing again.

Aftercare

Water 'french breakfast' radish in well and keep it in bright light; a freshly potted-on seedling can wilt for a day while roots settle, so do not overcompensate by drowning it. Do not fertilise for about 1 week — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for 'french breakfast' radish

'French Breakfast' Radish wants loose, friable, well-drained loam, ph 6.0-7.0. Light, stone-free soil lets the slender roots form cleanly and quickly. Avoid fresh manure and heavy clay, which fork the roots. Modest fertility is plenty for such a fast crop. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting 'french breakfast' radish — frequently asked questions

How often should you repot 'french breakfast' radish?

Pot on seedlings as they grow; not a perennial repot for 'french breakfast' radish. 'French Breakfast' Radish is a seasonal crop, so you pot it on as a growing plant rather than repotting a perennial. Step seedlings up gradually into loose, friable, well-drained loam, ph 6.0-7.0 so the roots never circle the cell, ending in a large final container. A root-bound transplant stalls and never fully recovers.

What size pot does 'french breakfast' radish need?

When is the best time of year to repot 'french breakfast' radish?

Can you put 'french breakfast' radish straight into a much bigger pot?

No. Even a fast-growing 'french breakfast' radish should only go up one pot size at a time. A vastly oversized pot holds a reservoir of wet soil the roots cannot reach, which stays cold and soggy and rots the roots — the opposite of what you wanted.

Should you fertilise 'french breakfast' radish after repotting?

Not immediately. Wait about 1 week after repotting 'french breakfast' radish. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.