Mature size & growth rate

How big does Russian Olive (Elaeagnus angustifolia) get?

Also called Russian olive, Oleaster, Silver berry, Narrow-leaved oleaster.

More about russian olive

About Russian Olive

Elaeagnus angustifolia · also called Russian olive, Oleaster · flowering

Elaeagnus angustifolia is a deciduous, nitrogen-fixing small tree or large shrub native from western and central Asia to the Caucasus and southern Russia, widely naturalised and invasive across the arid western United States. It is supremely tough: drought-tolerant, wind-resistant, and capable of growing in saline and nutrient-poor soils. The most important care fact is that it is classified as a noxious weed in several US states, so check local regulations before planting. The ASPCA does not list it as toxic to pets.

Mature size: 5–7 m (16–23 ft) tall and wide in open conditions.

Indoor size vs how big it gets in the wild

Russian Olive grows on a tree's timeline and scale — indoors it becomes a tall, trunked statement plant rather than a tabletop one. Indoors and in a pot, expect 5–7 m (16–23 ft) tall and wide in open conditions.. 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.

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

Russian Olive 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: no routine feeding required; nitrogen-fixing root nodules sustain the plant on poor soils; excess fertiliser promotes aggressive growth in this already invasive species.

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

How to keep russian olive smaller

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

The decisive tool is the secateurs: russian olive 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 russian olive 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 russian olive bigger or faster

If you want it to fill the space sooner, push the conditions rather than hoping — for russian olive 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 russian olive light requirements page covers exactly how bright a spot it needs to grow at its potential instead of stalling.

When russian olive outgrows the room (or the pot)

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

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 russian olive repotting guide. If you want more of this plant instead of a bigger one, the russian olive propagation guide turns prunings into new plants.

Russian Olive size — frequently asked questions

How big does russian olive get?

Russian Olive reaches 5–7 m (16–23 ft) tall and wide in open conditions. when grown indoors. 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 russian olive slow or fast growing?

Russian Olive is a moderate grower. Expect three to six years to reach mature indoor size, gaining a steady amount each growing season. Russian Olive grows on a tree's timeline and scale — indoors it becomes a tall, trunked statement plant rather than a tabletop one.

How long does russian olive 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 russian olive smaller?

The decisive tool is the secateurs: russian olive 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 russian olive 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.