Repotting guide

When & how to repot Cylindra Beet (Beta vulgaris subsp. vulgaris 'Cylindra')

Also called Cylindra beet, Formanova beet, cylindrical beet.

More about cylindra beet

About Cylindra Beet

Beta vulgaris subsp. vulgaris 'Cylindra' · also called Cylindra beet, Formanova beet · edible

Cylindra is a Danish heirloom beet forming long cylindrical roots 15-20 cm (6-8 in) that yield uniform slices, maturing in about 55-60 days. This cool-season biennial grown as an annual needs full sun, deep loose soil, and steady moisture. Its elongated shape grows partly above ground, easing harvest and giving high slice counts.

Mature size: Roots 15-20 cm (6-8 in) long and 4-5 cm (1.5-2 in) wide; tops reach 30-40 cm (12-16 in) tall

Watch for — Cracked or split roots: The long shape is prone to splitting from uneven moisture. Mulch and water steadily, especially during dry spells, and harvest before roots become oversized.

How to tell cylindra beet needs repotting

Repotting on a calendar is less reliable than reading the plant. For cylindra beet, 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 cylindra beet 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 cylindra beet

Pot on seedlings as they grow; not a perennial repot. Cylindra Beetis grown for one season, so the question is really “how often to pot on” — keep moving it up before the roots circle. Biennial root vegetable grown as an annual, producing an upright leafy clump above a long, carrot-shaped root that grows partly above the soil line. Bolts to flower in its second year or under stress..

What size pot to step cylindra beet up to

Pot cylindra beet 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 cylindra beet

Pot cylindra beet 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 cylindra beet

Pot on before it is root-bound. Check cylindra beet 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 deep, loose, fertile, 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 cylindra beet 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 cylindra beet

Cylindra Beet wants deep, loose, fertile, well-drained loam, ph 6.0-7.0. The long roots demand deeply worked, stone-free soil for straight growth. Avoid acidic soils that lock up boron and cause internal blackening; loose ground also lets the shoulders push up cleanly as they elongate. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting cylindra beet — frequently asked questions

How often should you repot cylindra beet?

Pot on seedlings as they grow; not a perennial repot for cylindra beet. Cylindra Beet is a seasonal crop, so you pot it on as a growing plant rather than repotting a perennial. Step seedlings up gradually into deep, loose, fertile, 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 cylindra beet need?

When is the best time of year to repot cylindra beet?

Can you put cylindra beet straight into a much bigger pot?

No. Even a fast-growing cylindra beet 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 cylindra beet after repotting?

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