2 saves
Allocasuarina
We track 3 varieties; the ones most used by real gardeners.
The 3 most-saved Allocasuarina varieties
3 species of Allocasuarina
Each one is a parent of the varieties above.
Track your Allocasuarina in Sow
Save the Allocasuarina you grow and get care reminders timed to your zone.
How to grow Allocasuarina
Whats common across all Allocasuarina varieties in our catalog — drawn from the care records of the 3 most-grown of them.
The Allocasuarina year
- PlantSeptember and October100% of varieties
Plant tubestock into well-drained soil during autumn to allow root establishment before summer.
- PruneMarch and April100% of varieties
Perform light formative tip-pruning on young plants to encourage dense growth; do not cut into old wood.
- FertilizeMarch and April100% of varieties
Apply a low-phosphorus native fertiliser sparingly in spring if growing in highly nutrient-deficient garden soils.
- Check for PestsJune and July100% of varieties
Inspect the root collar and lower trunk for signs of Phytophthora root rot, especially during periods of high rainfall.
- PropagateSeptember67% of varieties
Sow fresh seed collected from mature woody cones into a well-aerated seed-raising mix.
Do
- Plant in highly permeable, well-drained soil.
- Protect young tubestock from browsing possums with physical guards.
- Allow the soil to dry out completely between waterings once established.
- Ensure sharp soil drainage at the planting stage to prevent root rot.
- Protect young trees with guards if local wildlife or rabbits are active.
Avoid
- Never prune hard back into old, leafless, woody branchlets.
- Do not plant in poorly drained heavy clay depressions where water pools.
- Avoid heavy applications of general-purpose fertilisers.
- Do not prune heavily into old, bare wood, as this will kill the branches.
What goes wrong with Allocasuarina
| Problem | What you'll see | What to do |
|---|---|---|
| Possums | Chewed branchlets and stripped bark on young trees. | Protect young plants with physical barriers or tree guards until they grow beyond browsing height. |
| Yellow-tailed Black-Cockatoos | Crushed and shredded seed cones on the ground and broken outer twigs. | No remedy required; this is a natural ecological interaction and does not threaten the tree's survival. |
| Borers | Holes in the trunk or branches, sawdust-like frass-filled tunnels, and progressive dieback of limbs. | Prune out heavily infested branches well below the damage zone and maintain plant vigour to deter attacks. |
| Moth borers | Holes in the trunk or wood with sawdust-like frass. | Avoid physical trunk damage to prevent entry and maintain overall tree health. |
| Phytophthora root rot | Sudden wilting of foliage, yellowing of the collar, and dieback of branchlets in poorly drained soil. | Improve site drainage, avoid overwatering, and apply a systemic fungicide if infection is detected early. |
| Phytophthora Dieback | Root rot, yellowing foliage, sudden or progressive wilting, and eventual plant death. | Ensure excellent soil drainage, avoid overwatering, and apply phosphite treatments if infection risk is high. |
| Sooty mould | Black, powdery coating on the cladodes. | Control the sap-sucking scale insects or plant hoppers that produce the honeydew. |
Making more Allocasuarina
Seed
- Collect mature, unopened brown woody cones from the tree and place them in a paper bag.
- Store the bag in a warm, dry location for several days until the cones open and release the winged seeds.
- Sow the seeds onto the surface of a moist, sandy, well-draining seed-raising mix and cover lightly with fine grit.
- Keep the medium moist but not waterlogged in a warm, semi-shaded position until germination occurs in two to four weeks.
Allocasuarina questions
How many types of Allocasuarina are there?
The Sow catalog tracks 3 distinct Allocasuarina varieties. The most popular — ranked by 2 real gardeners — are shown first above.
What zones does Allocasuarina grow in?
Across its varieties, Allocasuarina covers USDA Zones 8–10. Individual varieties differ — each plant page lists its exact range, and Sow filters the catalog to your zone automatically.
When does Allocasuarina bloom?
Most Allocasuarina varieties bloom in autumn. Staggering early, mid, and late varieties extends the genus's season in one bed.
Which Allocasuarina 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.