Sunday, 22 April 2012

Potting On Pachypodium Saundersii

Remember when I said I would wait potting these pachypodium saundersii on till they grew their first true leaves? Yes, well plans have changed. Today I lifted the seedlings to see if I could see good root growth. And as you can see the roots are already hitting the bottom. I could have prevented this by planting the seeds in a deeper container but that ship has sailed and these seedlings are strong enough to carefully transfer.

The reason that I am so anxious to move them on is that I want them to form a good straight down taproot because I often water my succulents from below. If I would continue growing  the seedlings in this container I run the risk of getting deformed taproots that are not going to travel to the bottom of the pot. Since all six of the seeds germinated I need six pots. I have four 'normal' sized ones, a tiny one and a slightly bigger one. Maybe we can see whether pot size has much of an effect on first year seedlings. I filled the pots with a simple cactus soil. I made sure to compress the soil slightly to get rid of any air pockets.

Removing these seedlings is very easy. Because the stems are already sturdy they are easily lifted by holding the baby leaves and lifting the earth with , in my case, a little fork.

They have only develloped one root and this makes it even easier to replant. just make a hole in the soil with a pencil (not too deep) and pop the seedlings in. I watered the soil thouroughly  both from the botom and from the top to make sure the roots are settled. Three of the pots are going back into the incubator and the other three are moving up to the orchid table. I expect that it will take some time yet for them to grow their first true leaves. When they do some of the seedlings are going to be exposed to the elements (being treated as my other pachypodiums and adeniums) and the others will be coddled inside probably.

Update June 14th

As you can see the seedlings are not particularly fast growing. The three that I kept in the propagator have grown a set of true leaves and certainly look more robust. Unfortunately one of the seedlings I kept outside dried out too quickly (that should teach me to have a bit of patience). The other one outside of the propagator is still alive but growing even slower than the three in the propagator. I am going to leave all three where they are for now, maybe put another one outside when it growth another set of leaves. All in all this is a slower growing seedling when compared to the Pachypodium rosulatum.

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