Mature size & growth rate

How big does French Tarragon (Artemisia dracunculus 'Sativa') get?

Also called True Tarragon, Estragon.

More about french tarragon

About French Tarragon

Artemisia dracunculus 'Sativa' · also called True Tarragon, Estragon · herb

French Tarragon is the prized culinary tarragon, a bushy perennial with narrow aromatic leaves carrying a distinctive sweet aniseed flavour essential to French cooking and béarnaise sauce. Unlike Russian tarragon, it rarely flowers or sets viable seed, so it is propagated vegetatively. It needs full sun, sharp drainage, and lean soil, resenting wet feet.

Mature size: Roughly 60-90 cm tall and 30-45 cm wide.

Indoor size vs how big it gets in the wild

French Tarragon does not get tall — it gets long. Size here is about stem length and how you train or cut it, not how much floor it claims. Indoors and in a pot, expect roughly 60-90 cm tall and 30-45 cm wide.. A pot, your light levels and a little pruning are what set the final size in a home, far more than the plant's theoretical potential.

Growth shows up as lengthening stems that trail down or climb up a support; the plant can be kept tiny or grown metres long from the exact same root system.

Growth rate and years to mature

French Tarragon is a moderate grower. Realistically, expect three to six years to reach mature indoor size, gaining a steady amount each growing season. Its feeding profile backs this up: a light feeder that prefers lean conditions. apply a single light feed of balanced fertiliser or compost in spring; over-feeding produces soft, floppy growth with diluted aniseed flavour. container plants benefit from a half-strength liquid feed a few times in the growing season.

Want this turned into the right next pot at the right moment? The pot size calculator and the french tarragon repotting guide cover when and how much to size up — pot size is one of the biggest levers on how fast french tarragon grows.

How to keep french tarragon smaller

You are not stuck with the maximum size. For french tarragon specifically, these are the levers, in order of impact:

Trim the longest vines back to the length you want — french tarragon takes hard cutting well and bushes out from the cut.
Cut just above a leaf node; each trimmed stem usually branches into two, so pruning makes it fuller, not sparser.
The cuttings root easily in water or mix, so "keeping it smaller" doubles as free new plants.
A trim once or twice a season is usually enough to hold its length.

The keep-it-smaller method, step by step

Decide the length you want. Pick the point each vine of french tarragon should stop — you can be aggressive; it regrows readily.
Cut just above a node. Snip about 0.5 cm above a leaf node so the stem branches there instead of dying back.
Root the cuttings. Drop the trimmed pieces in water or mix — they root in 2-4 weeks and can fill the same pot for a bushier look.
Repeat as it runs. Re-trim whenever it overshoots; regular light pruning keeps it both smaller and fuller.

How to grow french tarragon bigger or faster

If you want it to fill the space sooner, push the conditions rather than hoping — for french tarragon the accelerators are:

Good light plus a moss pole or trellis triggers the longest, fastest, largest-leaved growth.
Give it something to climb — many vines grow far faster and bigger up a support than trailing.
Feed through spring and summer and keep it consistently watered while it is actively running.

Light is almost always the ceiling. The french tarragon light requirements page covers exactly how bright a spot it needs to grow at its potential instead of stalling.

When french tarragon outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for french tarragon:

Vines pooling on the floor or wrapping past where you want them — purely a trimming cue, not a repot one.
Bare, leggy stems with leaves only at the tips (usually a light problem, not a size one).
A tangled mass that has outrun its support and needs cutting back and re-training.

If it is the pot rather than the room, it is a repotting job, not a goodbye — see the french tarragon repotting guide. If you want more of this plant instead of a bigger one, the french tarragon propagation guide turns prunings into new plants.

French Tarragon size — frequently asked questions

How big does french tarragon get?

French Tarragon reaches roughly 60-90 cm tall and 30-45 cm wide. when grown indoors. Growth shows up as lengthening stems that trail down or climb up a support; the plant can be kept tiny or grown metres long from the exact same root system.

Is french tarragon slow or fast growing?

French Tarragon is a moderate grower. Expect three to six years to reach mature indoor size, gaining a steady amount each growing season. French Tarragon does not get tall — it gets long. Size here is about stem length and how you train or cut it, not how much floor it claims.

How long does french tarragon take to reach full size?

Roughly three to six years to reach mature indoor size, gaining a steady amount each growing season. Light, pot size and feeding move that timeline more than anything else.

How do I keep french tarragon smaller?

Trim the longest vines back to the length you want — french tarragon takes hard cutting well and bushes out from the cut. Cut just above a leaf node; each trimmed stem usually branches into two, so pruning makes it fuller, not sparser. The cuttings root easily in water or mix, so "keeping it smaller" doubles as free new plants. A trim once or twice a season is usually enough to hold its length.

How can I make french tarragon grow bigger or faster?

Good light plus a moss pole or trellis triggers the longest, fastest, largest-leaved growth. Give it something to climb — many vines grow far faster and bigger up a support than trailing. Feed through spring and summer and keep it consistently watered while it is actively running.