Mature size & growth rate

How big does Greengage (Prunus domestica 'Reine Claude Dorée') get?

Also called greengage, Reine Claude, green plum.

More about greengage

About Greengage

Prunus domestica 'Reine Claude Dorée' · also called greengage, Reine Claude · edible

The greengage is a connoisseur's dessert plum bearing small, round, green-to-gold fruit with exceptionally rich, honeyed flesh. The original Reine Claude is only partially self-fertile and needs warmth and a sheltered, sunny wall to ripen well, rewarding patient gardeners in good summers with arguably the finest-flavoured plum of all.

Mature size: 3-4 m tall and wide on St Julien A; around 2.5 m on Pixy or kept compact as a wall-trained fan.

Indoor size vs how big it gets in the wild

Greengage is a tree at heart. Indoors a pot and your ceiling keep it to 3-4 m tall and wide on st julien a, but in the ground it is a different scale of plant entirely (around 2.5 m on pixy or kept compact as a wall-trained fan.). Indoors and in a pot, expect 3-4 m tall and wide on st julien a. In the ground with no restriction it is a completely different plant — around 2.5 m on pixy or kept compact as a wall-trained fan. — which is why the pot, the light and the pruning matter so much for the size you actually end up with.

It gains real height on a trunk or main stem, adding a tier of leaves a year and eventually reaching for the ceiling — this is a plant you grow up, not out.

Growth rate and years to mature

Greengage is a fast grower. Realistically, expect two to four years from a young plant to a room-filling specimen in good light. Its feeding profile backs this up: feed a balanced fertiliser in late winter plus sulphate of potash in spring to support its often-shy cropping. mulch with rotted manure annually. avoid excess nitrogen, which delays fruiting and encourages aphids and soft growth.

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

How to keep greengage smaller

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

The decisive tool is the secateurs: greengage can be topped (cut the main growing tip) to cap its height and force a bushier, shorter shape.
Keeping it deliberately pot-bound in a snug container slows the whole plant and limits ultimate size.
Prune in spring so it heals fast; remove the tallest leader back to a node to reset the height.
Expect to top or hard-prune it every year or two — left alone it heads for the ceiling.

The keep-it-smaller method, step by step

Pick the new height. Decide how tall you want greengage and find a leaf node or branch point just below that.
Top the main stem. Cut the main growing tip cleanly just above that node in spring; this permanently caps the height and forces side branches.
Keep the pot snug. Avoid jumping to a much bigger pot — a slightly restricted rootball keeps the whole plant smaller.
Maintain the shape. Prune back the tallest new leaders each spring to hold it at the height you chose.

How to grow greengage bigger or faster

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

It already wants the bright light it needs; warmth, a yearly pot-up and spring-summer feed are the accelerators.
Pot up a size every year or two while young; restricted roots are the main thing holding height back.
Feed regularly through the growing season and keep it warm — height comes from sustained good conditions.

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

When greengage outgrows the room (or the pot)

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

The top leaves pressing against or bent by the ceiling — the classic "this is now too tall indoors" sign.
It has to be moved away from a light source it has literally outgrown.
Roots filling the largest pot you can reasonably keep indoors — at that point it is top-or-prune or move it outside (if hardy).

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

Greengage size — frequently asked questions

How big does greengage get?

Greengage reaches 3-4 m tall and wide on st julien a when grown indoors, and far larger where it grows unrestricted (around 2.5 m on pixy or kept compact as a wall-trained fan.). It gains real height on a trunk or main stem, adding a tier of leaves a year and eventually reaching for the ceiling — this is a plant you grow up, not out.

Is greengage slow or fast growing?

Greengage is a fast grower. Expect two to four years from a young plant to a room-filling specimen in good light. Greengage is a tree at heart. Indoors a pot and your ceiling keep it to 3-4 m tall and wide on st julien a, but in the ground it is a different scale of plant entirely (around 2.5 m on pixy or kept compact as a wall-trained fan.).

How long does greengage take to reach full size?

Roughly two to four years from a young plant to a room-filling specimen in good light. Light, pot size and feeding move that timeline more than anything else.

How do I keep greengage smaller?

The decisive tool is the secateurs: greengage can be topped (cut the main growing tip) to cap its height and force a bushier, shorter shape. Keeping it deliberately pot-bound in a snug container slows the whole plant and limits ultimate size. Prune in spring so it heals fast; remove the tallest leader back to a node to reset the height. Expect to top or hard-prune it every year or two — left alone it heads for the ceiling.

How can I make greengage grow bigger or faster?

It already wants the bright light it needs; warmth, a yearly pot-up and spring-summer feed are the accelerators. Pot up a size every year or two while young; restricted roots are the main thing holding height back. Feed regularly through the growing season and keep it warm — height comes from sustained good conditions.