Pachypodium bicolor seedlings
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Pachypodium bicolor seedlings

Pachypodium bicolor (Pachypodium rosulatum subsp. bicolor). 25 seeds received, 7 germinated, January 2021.
Pachypodium bicolor seedlings

This is a blog post to track our experience with Pachypodium bicolor (Pachypodium rosulatum subsp. bicolor), planted at end of Jan. 2021.

The seeds were acquired in the beginning of 2021 from rarepalmseeds.com. They arrived in roughly two weeks, no phyto/cites certificates needed as the company is based in Munich, Germany and we are based in EU as well. A total of 25 seeds were in the package.
We planted them on 20th of January. Out of a total of 25 seeds, just 7 germinated until 26th of January. We suspect the seeds were obtained from a supplier that had them for quite a while, therefore being fairly old. Some of the seeds were broken in the package and they seemed dry. Howeve, given thge availability of these seeds, we are still happy of the outcome even if it is less than ideal.

The grow tent setup is the same as described in the Pachypodium ambongense seedlings post, as well as the overall growth conditions.

Soil composition

The soil composition is a very well draining one, as expected. The soil composition has been chosen to not be overly acidic.

  • 2 parts high quality cactus soil
  • 2 parts large grain pumice (2-5mm grain size)
  • 1 part large grain sand (2-5mm grain size), 1 part granite gravel (2-5mm grain size)
  • 1 part zeolite (2-5mm grain size)
  • 1 part red volcanic rock (4-7mm grain size)

The soil will require constant watering (we water it between 1 and 4 days depending on the atmospheric conditions). The soil is really well draining, allowing the roots to "breathe" without becoming waterlogged even if watered more often than needed.

Seedling progression

Unfortunately we do not have pictures from before 28th of February 2021, so we will start tracking from here.

Currently the seedlings are going somewhat strong, the first set of true leaves are out for all the seedlings. They are not as fast growing as Pachypodium ambongense. Since we never grew this species, we are not sure if this is soil related or not. We will keep watching, and maybe later on decide on changing the soil if needed.

28th of February 2021

12

13

11

The last picture looks like some sort of fungus, but this seems to not damage or hurt the plant. If the soil looks too wet, it is because we just watered them as the soil was bone dry after a few days.

The last picture also shows the seedling beginning to transition to a more "mature" trunk instead of the fleshy seedling one.