Dragon fruit prefers well-draining, slightly sandy loam with pH 6–7. Avoid clay-heavy soils or areas with poor drainage. In WA's climate, raised beds or mounded rows work well to ensure water moves away from the roots quickly.
Full sun is essential — at least 6 hours per day. A north-facing position in WA will maximise sun exposure throughout the growing season, which directly influences flower set and fruit quality.
Soil type and pH
Dragon fruit is a cactus and behaves like one — it thrives in free-draining conditions and will rot quickly in compacted or water-retentive soils. In the Perth region, sandy soils are common and can work well with some organic matter added to improve water retention during the initial establishment phase.
Test your soil pH before planting. A simple kit from a nursery or hardware store is all you need. If your soil is too alkaline (above 7.5), add sulfur. If too acidic, add agricultural lime gradually and retest before planting.
Improving drainage
If you're working with heavier or clay-rich soil, the simplest fix is to build raised mounds or rows and incorporate coarse sand and perlite through the planting area. A raised bed of 30–40cm is usually enough to prevent waterlogging in most WA conditions.
Simon's note: I've found that it's better to improve drainage before planting than to try to fix a struggling plant later. Root rot is often invisible until it's advanced — prevention is much easier than treatment.
Key tips
- Test your soil pH before planting — aim for 6.0 to 7.0
- Add coarse sand or perlite to improve drainage in heavier soils
- Avoid planting in areas that hold water after rain
- A north-facing position maximises sun exposure in WA
- Minimum 6 hours of full sun per day for healthy flowering
- Raised mounds (30–40cm) are an easy fix for poor drainage