I have a Madagascar Palm (Pachypodium lamerei) that I have had in various
pots for the last 20 years. It is about 9 feet
tall and grows about 8 inches/yr in it's current
environment, which is a patio that receives a few
hours of direct sunlight each day. I am in So Cal
where the summers are warm and dry and the winters
are moderate w/ no freezing.
For the past several years, many of the new leaves at
the top of the 2 trunks turn black and curl up
at the tips. Any idea what might be causing this? I
have tried fungiced but I don't really see any
improvement (at least not for long). I've had this plant for 20 years and don't want to lose it!
These are photos of my Pachypodium geayi. This specimen is about 16 in/41 cm tall and growing in full sun. Notice the deep green coloration of the long, narrow foliage, and felt-like undersides. I am using a well-draining bonsai soil with a little bit of slow-release, granular fertilizer.
Edit: Further research has revealed that P. lamerei should be a lighter green than P. geayi, so I do not believe there is an issue with light exposure.
Check out the "Succulent and Caudiciform Culture Guide" posted in this forum. In particular, click onto the Highland Succulents link and read about fertilization and soil. After reading, you may want to consider a soil change and modifying your fertilization practices.
Last edited by markinwestmich; August 24th, 2007 at 05:48 AM.