Repotting guide

When & how to repot Fragrant Agrimony (Agrimonia procera)

Also called Fragrant Agrimony, Scented Agrimony, Tall Agrimony.

More about fragrant agrimony

About Fragrant Agrimony

Agrimonia procera · also called Fragrant Agrimony, Scented Agrimony · herb

Fragrant Agrimony is an aromatic herbaceous perennial native to western and central Europe, distinguished from common agrimony by its taller stature and noticeable apricot-like fragrance from glands on leaf undersides. It bears slender spikes of small, five-petalled yellow flowers in summer. Hardy and undemanding, it thrives in sunny borders and hedgerow margins with minimal care.

Mature size: 60-120 cm tall, 30-50 cm spread

Watch for — Powdery mildew in dry conditions: White, powdery coating may appear on leaves during hot, dry spells, especially in confined spaces with poor airflow. Improve air circulation, avoid water stress, and apply potassium bicarbonate spray if needed.

How to tell fragrant agrimony needs repotting

Repotting on a calendar is less reliable than reading the plant. For fragrant agrimony, 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 fragrant agrimony 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 fragrant agrimony

Pot on seedlings as they grow; not a perennial repot. Fragrant Agrimonyis grown for one season, so the question is really “how often to pot on” — keep moving it up before the roots circle. Upright, clump-forming herbaceous perennial.

What size pot to step fragrant agrimony up to

Pot fragrant agrimony 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 fragrant agrimony

Pot fragrant agrimony 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 fragrant agrimony

Pot on before it is root-bound. Check fragrant agrimony 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 loam, sandy loam, or chalky soil, ph 6.0-8.0 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 fragrant agrimony 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 fragrant agrimony

Fragrant Agrimony wants well-drained loam, sandy loam, or chalky soil, ph 6.0-8.0. Adaptable to most well-drained soils including alkaline and chalky ground. Tolerates dry soils better than its close relative A. eupatoria. Does not require rich fertility — average garden soil is ideal. Avoid heavy, waterlogged clay. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting fragrant agrimony — frequently asked questions

How often should you repot fragrant agrimony?

Pot on seedlings as they grow; not a perennial repot for fragrant agrimony. Fragrant Agrimony 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 loam, sandy loam, or chalky soil, ph 6.0-8.0 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 fragrant agrimony need?

When is the best time of year to repot fragrant agrimony?

Can you put fragrant agrimony straight into a much bigger pot?

No. Even a fast-growing fragrant agrimony 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 fragrant agrimony after repotting?

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