Mature size & growth rate

How big does Blue Anise Sage (Salvia guaranitica) get?

Also called Blue Anise Sage, Anise-Scented Sage, Hummingbird Sage.

More about blue anise sage

About Blue Anise Sage

Salvia guaranitica · also called Blue Anise Sage, Anise-Scented Sage · flowering

Blue anise sage is a tuberous herbaceous perennial native to South America (Brazil, Paraguay, Uruguay, and Argentina), valued for its deep blue, two-lipped flowers and strongly anise-scented foliage produced from late summer into autumn. It thrives in full sun to light partial shade in moist but well-drained, moderately fertile soil. The most important care fact is to provide support for its tall stems and cut back spent flower spikes to prolong the long flowering season. Note: Salvia ambigens is a synonym for Salvia guaranitica per Kew/POWO taxonomy. Salvia is considered non-toxic to cats and dogs by the ASPCA.

Mature size: 1–1.5m tall, 0.5–1m wide

Indoor size vs how big it gets in the wild

Blue Anise Sage is a garden shrub whose final size is set more by your secateurs than by the plant — pruning, not luck, decides how big it gets. Indoors and in a pot, expect 1–1.5m tall, 0.5–1m 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.

Left unpruned it builds a woody framework that gets taller and wider every year; with annual pruning you hold it at whatever size suits the space.

Growth rate and years to mature

Blue Anise Sage 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: apply a balanced granular fertiliser in early spring as growth resumes; avoid high-nitrogen feeds that promote leafy growth at the expense of flowers.

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

How to keep blue anise sage smaller

You are not stuck with the maximum size. For blue anise sage specifically, these are the levers, in order of impact:

Prune blue anise sage annually at the right time for its type — this is the primary, expected way to control its size.
Remove the oldest, thickest stems at the base each year to keep it open and within bounds.
Growing it in a large container rather than open ground naturally restricts the ultimate size.
Avoid heavy feeding if you want to limit growth — rich soil and lots of nitrogen drive bigger, faster shrubs.

The keep-it-smaller method, step by step

Prune at the right time. Time the cut to blue anise sage's type (after flowering for many spring shrubs, late winter for summer-flowering ones) so you do not lose the next display.
Take out the oldest stems. Remove up to a third of the oldest, thickest stems at the base to renew the shrub and contain it.
Shorten the rest. Cut the remaining stems back to an outward-facing bud at the height and width you want.
Restrict the roots. For a permanent size cap, grow it in a large container rather than open ground.

How to grow blue anise sage bigger or faster

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

Plant it in open ground in good soil — far more vigorous than a container-restricted plant.
Full sun (which it wants) plus an annual mulch and feed gives the strongest growth.
Water well through the first establishment years; a settled root system drives the fastest size gain.

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

When blue anise sage outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for blue anise sage:

It shades or crowds neighbouring plants, or blocks a path it used to clear.
Bare, woody, unproductive centres with growth only on the outside — a sign it needs renovation pruning.
It has clearly exceeded the space you allotted and an annual trim no longer holds it.

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

Blue Anise Sage size — frequently asked questions

How big does blue anise sage get?

Blue Anise Sage reaches 1–1.5m tall, 0.5–1m wide when grown indoors. Left unpruned it builds a woody framework that gets taller and wider every year; with annual pruning you hold it at whatever size suits the space.

Is blue anise sage slow or fast growing?

Blue Anise Sage is a moderate grower. Expect three to six years to reach mature indoor size, gaining a steady amount each growing season. Blue Anise Sage is a garden shrub whose final size is set more by your secateurs than by the plant — pruning, not luck, decides how big it gets.

How long does blue anise sage 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 blue anise sage smaller?

Prune blue anise sage annually at the right time for its type — this is the primary, expected way to control its size. Remove the oldest, thickest stems at the base each year to keep it open and within bounds. Growing it in a large container rather than open ground naturally restricts the ultimate size. Avoid heavy feeding if you want to limit growth — rich soil and lots of nitrogen drive bigger, faster shrubs.

How can I make blue anise sage grow bigger or faster?

Plant it in open ground in good soil — far more vigorous than a container-restricted plant. Full sun (which it wants) plus an annual mulch and feed gives the strongest growth. Water well through the first establishment years; a settled root system drives the fastest size gain.