Dragon fruit are climbing cacti and need strong support to grow and produce well. Without adequate support, canes will sprawl along the ground, reducing airflow, increasing pest pressure, and making harvesting difficult.
Simon uses a simple timber post with a tyre or platform on top to allow the canes to cascade down naturally once they reach height. This approach is low-cost, long-lasting, and produces good results in WA's climate.
Post types and materials
Steel T-posts or treated pine work well in WA conditions and can last many years with minimal maintenance. Hardwood posts are another good option if you have access to them. Avoid untreated softwood — it will rot quickly in contact with moist soil.
The key requirement is strength. Dragon fruit plants produce heavy fruit and extensive canopy over time, and a failing support is difficult to fix once the plant is established. Over-engineer the posts rather than under-engineer them.
Post height and spacing
Posts should be at least 1.8m above ground, with 30–40cm set into the soil. Space them 3–4 metres apart in rows to allow good airflow and access for hand pollination and harvesting.
Simon's approach: I use old tyres bolted to the top of the post as a platform — they're free, durable, and the canes cascade over them naturally. A flat timber platform works just as well. The goal is to give the canes somewhere to hang once they reach the top.
Key tips
- Posts should be at least 1.8m above ground level
- Bury posts 30–40cm into the soil for stability
- Space posts 3–4 metres apart for airflow and access
- Allow canes to cascade naturally once they reach the top platform
- Avoid lightweight or flexible supports — fruit weight is significant over time
- A tyre or flat timber platform at the top works well as a cascade point