Repotting guide

When & how to repot Red-Topped Sage (Salvia viridis)

Also called Red-Topped Sage, Annual Clary, Painted Sage, Annual Clary Sage.

More about red-topped sage

About Red-Topped Sage

Salvia viridis · also called Red-Topped Sage, Annual Clary · flowering

Salvia viridis is a fast-growing annual native to the Mediterranean region, grown primarily for its showy coloured bracts — white, pink, or purple with darker veins — rather than its small flowers. It performs best in full sun and free-draining soil, and the colourful bracts make it an outstanding cut and dried flower. The key care fact is that it is a true annual and must be sown fresh each year, but it self-seeds freely if a few flower heads are left to mature. Salvia is listed as non-toxic to cats and dogs by the ASPCA.

Mature size: 40–55 cm tall, 20–30 cm wide.

How to tell red-topped sage needs repotting

Repotting on a calendar is less reliable than reading the plant. For red-topped sage, 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 red-topped sage 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 red-topped sage

Pot on seedlings as they grow; not a perennial repot. Red-Topped Sageis grown for one season, so the question is really “how often to pot on” — keep moving it up before the roots circle. Upright branching annual with showy terminal bracts on multiple flower spikes..

What size pot to step red-topped sage up to

Pot red-topped sage 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 red-topped sage

Pot red-topped sage 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 red-topped sage

Pot on before it is root-bound. Check red-topped sage 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 well-drained, light to moderately fertile loam or sandy soil 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 red-topped sage 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 red-topped sage

Red-Topped Sage wants well-drained, light to moderately fertile loam or sandy soil. Tolerates poor and alkaline soils; rich, heavy soils result in rank leaf growth and a risk of botrytis; good drainage is essential. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting red-topped sage — frequently asked questions

How often should you repot red-topped sage?

Pot on seedlings as they grow; not a perennial repot for red-topped sage. Red-Topped Sage is a seasonal crop, so you pot it on as a growing plant rather than repotting a perennial. Step seedlings up gradually into well-drained, light to moderately fertile loam or sandy soil 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 red-topped sage need?

When is the best time of year to repot red-topped sage?

Can you put red-topped sage straight into a much bigger pot?

No. Even a fast-growing red-topped sage 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 red-topped sage after repotting?

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