Mature size & growth rate

How big does All Gold Lemon Balm (Melissa officinalis 'All Gold') get?

Also called All Gold Lemon Balm, Golden Lemon Balm.

More about all gold lemon balm

About All Gold Lemon Balm

Melissa officinalis 'All Gold' · also called All Gold Lemon Balm, Golden Lemon Balm · herb

All Gold Lemon Balm is a cultivar of lemon balm with uniformly bright golden-yellow foliage — more intensely gold than 'Aurea'. It retains the signature lemon fragrance and flavour and is prized as both a culinary herb and a garden foliage accent. Compact and hardy, it suits containers, herb borders, and pollinator plantings.

Mature size: 30–50 cm tall (12–20 in), 40–55 cm wide

Watch for — Reversion to green: Strong-growing all-green shoots may arise, especially after hard pruning or in fertile soil. Remove reverted growth at the base immediately to preserve the 'All Gold' appearance.

Indoor size vs how big it gets in the wild

All Gold Lemon Balm stays fairly low but widens over time — it spreads into a bigger clump by offsets, runners or rhizomes rather than shooting upward. Indoors and in a pot, expect 30–50 cm tall (12–20 in), 40–55 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.

Size here is about width, not height: the plant builds an ever-wider clump or sends out plantlets and runners while staying relatively short.

Growth rate and years to mature

All Gold Lemon Balm 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 half-strength balanced fertiliser once in spring. avoid high-nitrogen feeds, which cause reversion to green and excessive leafy growth that dilutes aroma.

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

How to keep all gold lemon balm smaller

You are not stuck with the maximum size. For all gold lemon balm specifically, these are the levers, in order of impact:

Divide the clump every year or two — splitting all gold lemon balm is the main way to control its spread and refresh it.
Remove runners, plantlets or offsets as they appear if you want it to stay a single tight clump.
Keep it slightly pot-bound; a snug pot naturally limits how wide the clump can get.

The keep-it-smaller method, step by step

Lift the whole plant. Slide all gold lemon balm out of its pot in spring when the clump has filled it.
Split the clump. Tease or cut the rootball into two or more sections, each with healthy roots and growth.
Repot one division. Put a single division back in the original pot to reset it to a smaller size; pot or give away the rest.
Remove offsets as they form. Through the year, detach new runners or pups to stop it spreading again.

How to grow all gold lemon balm bigger or faster

If you want it to fill the space sooner, push the conditions rather than hoping — for all gold lemon balm the accelerators are:

Give it a wider pot and let the clump fill it — width is exactly how this plant gets bigger.
Good light plus regular feeding maximises offset and runner production.
Leave plantlets and offsets attached and feed through the growing season for the fastest spread.

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

When all gold lemon balm outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for all gold lemon balm:

The clump bulging over the pot rim or splitting the pot — the cue to divide, not to find a bigger room.
A dense centre that goes bare or tired while the edges keep spreading.
Runners or offsets escaping across the shelf or into neighbouring pots.

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

All Gold Lemon Balm size — frequently asked questions

How big does all gold lemon balm get?

All Gold Lemon Balm reaches 30–50 cm tall (12–20 in), 40–55 cm wide when grown indoors. Size here is about width, not height: the plant builds an ever-wider clump or sends out plantlets and runners while staying relatively short.

Is all gold lemon balm slow or fast growing?

All Gold Lemon Balm is a moderate grower. Expect three to six years to reach mature indoor size, gaining a steady amount each growing season. All Gold Lemon Balm stays fairly low but widens over time — it spreads into a bigger clump by offsets, runners or rhizomes rather than shooting upward.

How long does all gold lemon balm 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 all gold lemon balm smaller?

Divide the clump every year or two — splitting all gold lemon balm is the main way to control its spread and refresh it. Remove runners, plantlets or offsets as they appear if you want it to stay a single tight clump. Keep it slightly pot-bound; a snug pot naturally limits how wide the clump can get.

How can I make all gold lemon balm grow bigger or faster?

Give it a wider pot and let the clump fill it — width is exactly how this plant gets bigger. Good light plus regular feeding maximises offset and runner production. Leave plantlets and offsets attached and feed through the growing season for the fastest spread.