I got some Borassodendron machadonis seeds to replace the tree at Kopsick that died recently, and they're starting to germinate now. They look like mini Borassus seeds and it looks like they're growing like one too. How deep does the taproot go on these guys? Do I have to germinate these like a Borassus (let the root grow really long until it starts differentiating, then elevate the whole thing above the pot) or will these be okay just being planted into a deep pot?

It's been a long time since I germinated Borassodendron, but I don't think they are anywhere near the pain in the a** that Borassus are. I'm sure 8in is enough. If you don't have a deep pot, just cut out the bottom of a 1gal pot and put it on top of another 'filled' 1 gal pot, and fill part way. That will be plenty deep. 

2 hours ago, NatureGirl said:

It's been a long time since I germinated Borassodendron, but I don't think they are anywhere near the pain in the a** that Borassus are. I'm sure 8in is enough. If you don't have a deep pot, just cut out the bottom of a 1gal pot and put it on top of another 'filled' 1 gal pot, and fill part way. That will be plenty deep. 

Thanks! Borassus were really labor intensive to germinate in pots for me, so I was hoping that Borassodendron wouldn't be as difficult. Sounds like my current situation should work!

Here are mine in 8" deep containers. The trick is to periodically raise the growing point up towards the soil line as the taproot grows in length.

These have opened a leaf since these shots were taken. I'll update when I get home from work, later. 

I just used a really deep pot and it worked well

For my borassus and my borassadendrons, I did a moist coco peat mix/vermiculite 50 50 blend, sealed 2-3 seeds per shoebox container. Fresh seed is key, but germinated within 3 days. I was checking them constantly, since I was afraid of the large sinkroot these drop in the shallow container. I would then move it it’s tall pot with enough room to grow. I attached some pics for you.  

Shelby 

6 hours ago, John in Andalucia said:

Here are mine in 8" deep containers. The trick is to periodically raise the growing point up towards the soil line as the taproot grows in length.

These have opened a leaf since these shots were taken. I'll update when I get home from work, later. 

...

..et voilà!

9 hours ago, John in Andalucia said:

 

Dear John,

Your saplings look super healthy. Can we all know what you feed your palms with ? And what is the potting mix you have used in these palm saplings seen in the above stills.

Thanks and Love,

Kris.

Hey Kris, how are you? Well I haven't started feeding them yet. Do you think the seeds are finished? My soil is an approx. 40-40-20 mix of coir, fine bark mulch and expanded clay granules. They've been grown indoors on a heat mat, in a NE facing window.

19 hours ago, John in Andalucia said:

Hey Kris, how are you? Well I haven't started feeding them yet. Do you think the 'seeds are finished'? My soil is an approx. 40-40-20 mix of coir, fine bark mulch and expanded clay granules. They've been grown indoors on a heat mat, in a NE facing window.

Hello John iam doing fine,Thank you. And about the seed,touch the radicle if it is dried and starting to disintegrate by our touch you can remove it. And one thing that i have not tried in my soil mix is 'pine bark mulch'. Next time i will add even this and see.

Nice to hear from you. & Lots of love to you,

Kris.