Murraya going yellow, or stopped flowering? There’s usually one cause each.
Murraya is everywhere in Sydney’s south for good reason — dense, glossy, tough, and it perfumes an entire front yard when it flowers. The two complaints we hear are yellow leaves and no flowers, and they have completely different causes.
- Growth rate
- Moderate — about 30–60cm a year in Sydney
- Trim
- Light trim 3–4 times a year
- Hard reduction
- Yes — best done in early spring
- Flowers
- White, strongly fragrant; late winter and spring, plus flushes after rain
The short version
Yellow leaves are nearly always feeding or drainage — nitrogen or iron shortage, waterlogged roots, or soil that has gone too alkaline. No flowers is nearly always the trimming: murraya sets its buds on the outer growth, so a hedge sheared tight and often has its flower buds cut off before they ever open. You can have a crisp formal murraya or a heavily perfumed one. Getting both takes deliberate timing.
The flowering trade-off nobody explains
This is the single most useful thing to understand about murraya, and most people are never told it. The flowers form on the outer growth. Shear the sides of a murraya tight, on a formal hedge schedule, and you are cutting off the buds before they ever open. The plant is not sick. It is doing exactly what you have asked it to do.
So you choose. A tight formal murraya — clipped often, flat faces, sharp lines — gives you a beautiful green wall and very little perfume. A looser murraya, trimmed to keep it in bounds but allowed to carry some outer growth, gives you the flowers the plant is famous for. The middle path is to leave the sides alone through the flowering period and do the shaping cut after the flowers have dropped.
If you want the perfume, a light prune once flowering finishes is the move. It tidies the plant and encourages a stronger show next time round.
How often to cut it
Light and often beats hard and rarely on murraya. Three or four light trims spread across spring and summer will keep it dense and stop it going leggy, which is the direction it drifts if it is left alone or if it is planted somewhere too shady.
It grows more slowly than a lilly pilly or a viburnum — call it 30 to 60 centimetres a year here — so it is a cheaper hedge to keep than either of those. A murraya on a schedule is genuinely low-maintenance.
The hard reduction
If a murraya has gone woody, leggy and straggly, it can be cut back hard. It reshoots from old wood. The timing that works best in Sydney is early spring, so it has the warm months in front of it to rebuild.
You will get a bare, twiggy plant for a while. That is normal. Feed it and water it properly after the cut and it will come back denser than it was, with new growth breaking low down where you actually want it.
Takes a hard cutback — time it for early springWhat a healthy one looks like — and what it looks like when it isn’t
Most people can tell something is off but not what. This is the quick read.
Doing well
- Deep glossy green mature leaves with lighter new growth at the tips
- Dense and twiggy, with foliage carrying down to the base
- Clusters of white flowers in late winter and spring, and often after heavy rain
- Firm stems, not soft or mushy at the base
Telling you something
- Yellow leaves with the veins staying green — iron shortage or soil pH
- Yellow all over plus soft, drooping stems — overwatering or poor drainage
- Leggy and open with bare gaps — too little light or not enough trimming
- Plenty of leaf, no flowers — trimming timing, or too much nitrogen
The four things people ring us about
Yellow leaves, green veins
Classic iron shortage. It is often not that the soil lacks iron but that the pH is too high for the plant to take it up — murraya prefers slightly acidic soil.
What to do: Feed with a fertiliser that includes trace elements, and check the plant is not sitting wet. Improving drainage often fixes what looks like a feeding problem.
Yellow all over, stems soft
Overwatering or poor drainage. Murraya wants reliable moisture but hates sitting in it, and clay pockets through parts of the Shire hold water longer than people expect.
What to do: Cut back the watering, check nothing is pooling around the base, and keep mulch pulled back 5–10cm off the trunk so the collar can dry.
Green and leafy but no flowers
Either the shaping cuts are removing the buds, or the plant is being fed too much nitrogen — which pushes leaf growth at the expense of flower.
What to do: Do the shaping cut after flowering rather than before it, and use a balanced fertiliser rather than a high-nitrogen lawn feed. Shade is the third possibility — murraya will grow in shade but flowers properly in sun.
Leggy with bare gaps
Not enough light, or not enough trimming. Murraya stretches for light and goes open and woody when it is under-trimmed.
What to do: Regular light pruning is what thickens it. If the position is genuinely too shady, no amount of pruning fully fixes it — that is a planting problem, not a maintenance one.
What to feed it
A balanced controlled-release fertiliser with trace elements, applied in spring and again in autumn. Avoid high-nitrogen lawn fertiliser drifting into the hedge line — it is a common cause of a lush green murraya that never flowers.
The year, in this climate
Timings below are for Sydney’s south. Everything shifts a couple of weeks either way depending on the season you get.
| When | What | Why |
|---|---|---|
| Late winter – spring | Main flowering | Leave the sides alone if you want the perfume. This is the show. |
| After flowering | Shaping cut + feed | The prune that matters. Tidy it now and you get a stronger flush next season. |
| Summer | Light trims as needed | Keep it in bounds with light cuts. Water through dry stretches. |
| Early spring | Hard reduction, if due | If it has gone woody and leggy, this is the window — warm months ahead to rebuild. |
Written from what we see week to week on hedges around the Sutherland Shire, cross-checked against Australian horticultural sources. Every garden is different — aspect, soil and how the plant has been treated in the past all change the answer. If yours does not match what is described here, send us a photo and we will tell you what we think is going on.
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