Also known as Lilly Pilly · 90 saves
Syzygium
Syzygium, the genus most gardeners know as lilly pilly. We track 23 varieties; the ones most used by real gardeners.
The 12 most-saved Syzygium varieties
Browse all 23 Syzygium varieties →
7 species of Syzygium
Each one is a parent of the varieties above.
Track your Syzygium in Sow
Save the Syzygium you grow and get care reminders timed to your zone.
How to grow Syzygium
Whats common across all Syzygium varieties in our catalog — drawn from the care records of the 23 most-grown of them.
The Syzygium year
- PruneMarch and August100% of varieties
Prune during the warm growing season to maintain hedge density and stimulate colorful new flushes.
- FertilizeMarch and April100% of varieties
Apply a balanced, low-phosphorus native-formulated fertilizer to support dense growth.
- Check for PestsJune and July100% of varieties
Inspect leaf undersides and stems for scale insects, aphids, and spider mites.
- MulchApril57% of varieties
Apply a layer of organic mulch to conserve soil moisture and cool the root zone.
- Winter PrepNovember and December39% of varieties
Protect young plants from heavy frost damage in colder microclimates.
Do
- Apply a balanced slow-release fertilizer in early spring.
- Prune two to three times during the warm growing season to maintain a tight, dense hedge framework.
- Ensure the soil drains freely to prevent waterlogging and subsequent root rot.
- Protect young plants from drying winds and severe frosts during their first winter.
- Prune the tips regularly from a young age to encourage dense, bushy growth.
Avoid
- Do not cut back into old, bare wood, as it lacks active buds and will not regrow.
- Do not overwater heavy clay soils, which triggers fatal Phytophthora infections.
- Do not use high-phosphorus fertilizers that stimulate weak, soft growth susceptible to pests.
- Do not prune heavily into old, bare wood as it may fail to regenerate.
What goes wrong with Syzygium
| Problem | What you'll see | What to do |
|---|---|---|
| Aphids | Clusters of small, soft-bodied insects on tender new growth, causing leaf curling. | Blast off with a strong stream of water or spray with insecticidal soap. |
| Scale insects | Small, bumpy brown shells on stems and leaves, often accompanied by sticky honeydew. | Apply horticultural oil to suffocate the insects during their active crawler stage. |
| Spider mites | Fine webbing on the undersides of leaves and stippled, yellowing foliage. | Increase local humidity and spray the foliage with a strong stream of water or insecticidal soap. |
| Scale Insects | Small raised bumps on stems and leaves, accompanied by sticky honeydew and black sooty mold. | Apply horticultural dormant or summer oils during the crawler stages. |
| Root rot | Wilting, yellowing leaves and dieback despite wet soil, caused by Phytophthora fungi in poorly drained conditions. | Improve soil drainage, reduce watering frequency, and replant in raised beds if necessary. |
| Powdery mildew | White, powdery fungal patches on leaf surfaces, typically occurring in humid, stagnant air. | Prune to improve air circulation and apply a sulfur-based fungicide if symptoms persist. |
| Root Rot | Wilting, yellowing foliage, root decay, and eventual plant collapse in waterlogged soils. | Improve soil drainage, avoid overwatering, and apply fungicidal drenches if detected early. |
Making more Syzygium
Semi-hardwood cuttings
- Take 4-inch cuttings from firm, current-season growth in late summer.
- Remove the lower leaves and dip the cut end in rooting hormone powder.
- Insert the cuttings into a moist, free-draining propagation mix.
- Keep in a warm, humid environment with indirect light until roots establish.
Seed
- Extract seeds from fresh, fully ripe white fruits and clean off all surrounding pulp immediately.
- Sow the cleaned seeds into a moist, sterile seed-raising mix, pressing them lightly into the surface.
- Maintain a constant temperature of 24 to 28 degrees Celsius (75 to 82 degrees Fahrenheit) in a humid environment.
- Germination typically occurs within three to six weeks; transplant seedlings once they develop two sets of true leaves.
Syzygium questions
How many types of Syzygium are there?
The Sow catalog tracks 23 distinct Syzygium varieties. The most popular — ranked by 90 real gardeners — are shown first above.
What zones does Syzygium grow in?
Across its varieties, Syzygium covers USDA Zones 9–10. Individual varieties differ — each plant page lists its exact range, and Sow filters the catalog to your zone automatically.
When does Syzygium bloom?
Most Syzygium varieties bloom in spring, summer, late spring. Staggering early, mid, and late varieties extends the genus's season in one bed.
Which Syzygium should I choose?
Start from the most-saved varieties above — popularity across thousands of gardens is a strong signal of reliability — then filter by your zone and sun. In the Sow app you can preview any of them in a photo of your actual yard before you buy.