Holly's Homestead — Citrus Tree
Cumquat
Citrus japonica · Rue family
DIFFICULTY Easy
TYPE Evergreen perennial shrub/small tree
MATURITY 2 years to first fruit
TYPE Evergreen perennial shrub/small tree
MATURITY 2 years to first fruit
Sun
Full sun
Water
Regular, deep
Soil pH
5.5–6.5
Spacing
2–3m or pot
Depth
graft union above soil
01Compact and pot-friendly
The smallest of the common citrus, cumquat stays naturally compact and does very well in a large pot — a good option if garden space is limited.
02Planting
Method
Plant with the graft union above soil level, in the ground or a large pot.
Soil
Well-drained, slightly acidic.
Timing
Plant in spring.
Planting timing varies significantly by Australian climate zone. Set your zone above (or use the Find My Climate Zone tool) for guidance tailored to your own area.
03Growing care
- Water deeply and regularly, more often if potted.
- Feed with a citrus fertiliser three times a year.
- Mulch around the drip line.
- Prune lightly to shape after harvest.
04Problems
- Citrus leaf miner — prune affected tips.
- Gall wasp — prune out before spring.
- Sooty mould — treat the underlying pest.
- Fruit drop — irregular watering, more common in pots.
05Harvest & storage
Signs
Full orange colour, fruit is eaten whole, skin and all.
Method
Cut or twist from the stem.
Curing
None needed.
Storage
Room temperature about a week, or refrigerated longer.
Preserving
See Canning & Bottling (marmalade and preserved citrus) for ways to keep a harvest surplus.
06Companions & rotation
Plant nearby
ComfreyMarigoldAvoid nearby
Close tree plantingRotation note
Not applicable — perennial shrub/tree.
