Mine are all coming up on 6 or 7 years, and quite frankly my results suck and have been getting worse each year. Most have died down to about 2-3 ft and are bare. My first 2 seasons were incredible and the third season was by far my best. But over the last several years, by the time August hits everything gets yellow followed by massive leaf drop and zero fruit production. I haven't had fruit in over 3 years and have been debating throwing in the towel. I contacted this seller to try and figure out what I'm doing wrong but I'm running out of ideas at this point.
The only few things that come to mind are:
- Pump everything with fertilizer
- Swap the soil with bark
- Incorporate drip irrigation