Mature size & growth rate

How big does Redwood Sorrel (Oxalis oregana) get?

Also called Redwood Sorrel, Oregon Oxalis.

More about redwood sorrel

About Redwood Sorrel

Oxalis oregana · also called Redwood Sorrel, Oregon Oxalis · edible

A vigorous Pacific coast ground-cover perennial carpeting the floor of redwood and mixed conifer forests with large, clover-like trifoliate leaves and white or pink flowers spring through autumn. Leaves are edible in small amounts with a lemony tang. An outstanding shade ground cover for moist western gardens; spreads freely by rhizome.

Mature size: 10–25 cm tall, spreading indefinitely to form dense ground-covering mats

Watch for — Vigorous spreading: Oxalis oregana spreads aggressively by rhizome and can overwhelm smaller plants in a border. Install root barriers or confine to areas where ground-covering spread is desired.

Indoor size vs how big it gets in the wild

Redwood Sorrel 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 10–25 cm tall, spreading indefinitely to form dense ground-covering mats. 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

Redwood Sorrel is a fast grower. Realistically, expect one to three growing seasons — fast vines can add a metre or more of stem in a single good summer. Its feeding profile backs this up: minimal fertilization needed in humus-rich soils. top-dress with leaf mold or compost in autumn. in lean garden soils, a light application of balanced slow-release fertilizer in spring supports lush foliage.

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

How to keep redwood sorrel smaller

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

Trim the longest vines back to the length you want — redwood sorrel 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.
Expect to tidy it every few weeks in summer — this is a fast vine that will sprawl if left.

The keep-it-smaller method, step by step

Decide the length you want. Pick the point each vine of redwood sorrel 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 redwood sorrel bigger or faster

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

More (indirect) light dramatically lengthens the vines and enlarges the leaves.
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 redwood sorrel light requirements page covers exactly how bright a spot it needs to grow at its potential instead of stalling.

When redwood sorrel outgrows the room (or the pot)

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

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

Redwood Sorrel size — frequently asked questions

How big does redwood sorrel get?

Redwood Sorrel reaches 10–25 cm tall, spreading indefinitely to form dense ground-covering mats 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 redwood sorrel slow or fast growing?

Redwood Sorrel is a fast grower. Expect one to three growing seasons — fast vines can add a metre or more of stem in a single good summer. Redwood Sorrel 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 redwood sorrel take to reach full size?

Roughly one to three growing seasons — fast vines can add a metre or more of stem in a single good summer. Light, pot size and feeding move that timeline more than anything else.

How do I keep redwood sorrel smaller?

Trim the longest vines back to the length you want — redwood sorrel 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. Expect to tidy it every few weeks in summer — this is a fast vine that will sprawl if left.

How can I make redwood sorrel grow bigger or faster?

More (indirect) light dramatically lengthens the vines and enlarges the leaves. 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.