I soak mine for about 1-2hrs., then plant right away.
My guess would be that extended length of time with germination can be attributed to age of seed &/or viability from pod.
Generally speaking with fresh seed, you should see something from 3-5 days and then maybe the rest within a day or so.
Rick

Thanks, Ric. That short time was what I was expecting. I was really surprised as all that time passed with no germination. There are 3 up, but they're not standing up tall yet. It seems like they are taking much longer than other plants I've grown from seed.

I soaked my seeds for about 4 hours until most of them sank to the bottom. I read that they should sink on one of the forums if they are viable. Not sure how accurate that is. My seeds are also in a humidity dome with a heat mat. Temp in the dome is just under 90 degrees. Seeds are just barely covered by soil as is my understanding the best way to plant these.

Hopefully you will have a few more sprout in the next few days.

Gerald, my grow tent is averaging only 76 degrees. Yours is really warmI My seeds are barely covered, and all of them were floating as they were soaking. That seems to tell me maybe they weren't that viable?

Do not mean to cause confusion, but when I have soaked my seeds. Only for 1 or 2 hrs. They can still be floating and this has not given any thought of unviable seeds. I have heard this a long time ago, but I would not hold to to a stead fast rule of thumb. The soaking just aids in the stratification process and reduced the time it would take for natural process of softening the casing.
Rick

plantmanager said:Gerald, my grow tent is averaging only 76 degrees. Yours is really warmI My seeds are barely covered, and all of them were floating as they were soaking. That seems to tell me maybe they weren't that viable?

My seeding setup is in my home office which stays around 75 degrees right now. The heat mat and the humidity pushes it to almost 90 degrees. I have a jump start brand heat mat on these as the Apollo brand ones I've used in the past didn't get as hot.

As far as seeds being viable if they sink, it's only something I've read so am not saying that's certain. This is my first time with Adenium seeds, or plants for that matter so I am still learning. Not all of my seeds sunk, maybe 60ish did. Based on experience with other seeds I believe if they sink, it just means they were able to absorb the water but should germinate faster.

Best bet is give it more time and hope for the best.

That is so true, Gerald. I hope that you see more coming up in next few days.
Rick

@Ursula, do you soak your seeds? I did not soak any of mine before they were sown but since I don't know how many seeds there actually were before sowing, I don't know the ratio of successful germination. Nineteen plants are growing from the seeds you gifted.

Ken, no, I have not soaked them. I couldn't imagine that they would be soaked in their natural/native habitat.
I honestly don't know what the exact germination rate on those is. But I think it is probably in the neighborhood of 90 %, most of the sown seeds did come up. The thing is, my seeds are easy to come by, I have seed horns after every Summer, so that was not much of a consideration. I could imagine if one buys some very special seeds of a rare plant, the focus would be different.

Thanks, Ursula.

plantmanager said:Gerald, my grow tent is averaging only 76 degrees. Yours is really warmI My seeds are barely covered, and all of them were floating as they were soaking. That seems to tell me maybe they weren't that viable?

My seeding setup is in my home office which stays around 75 degrees right now. The heat mat and the humidity pushes it to almost 90 degrees. I have a jump start brand heat mat on these as the Apollo brand ones I've used in the past didn't get as hot.

As far as seeds being viable if they sink, it's only something I've read so am not saying that's certain. This is my first time with Adenium seeds, or plants for that matter so I am still learning. Not all of my seeds sunk, maybe 60ish did. Based on experience with other seeds I believe if they sink, it just means they were able to absorb the water but should germinate faster.

Best bet is give it more time and hope for the best.

I now have 5 seeds that have germinated. The first came up after 16 days, which is quite long for Adeniums. I'm hoping for more.

When my 19 seeds germinated, they all were done within ten days of each other. I left some seeds much longer but nothing doing.

16 days sure is long. All of my seeds germinated very fast. The first ones already sprouted after about 4 days. Within 6 days or so most of them where always germinated from all batches.

I know! I still only have 5 up. I think the seeds must have had some problems. They are my first Adenium seedlings, so all of this is a learning curve for me. I'm just happy to see the 5. I can now see some tiny leaves forming.

To bad only 5. They are so cute those Tiny seedlings. Did you get them or bought from a seller?

They were gifted to me on Houzz. I'm happy with the 5, and it will be less to care for as they grow larger. My big adenium is getting so heavy that it's difficult for me to carry it. That big porcelain pot weighed a lot before the plant went in!

I can imagine that. Certainly a porcelain pot is very heavy.

Success! Got my seeds from mr Ko and so far 19 out of 25 seeds sprouted. Under lights in egg cartons. Soon will scoop them into individual paper pots and soil. OMG so fun. I will experiment with the taproot cutting mentioned in this thread. What a fun project. Maybe Christmas gifts for next year.

A lot of my ademium leaves are looking bad and ultimately dropping. It seems like the leaves begin dying at the tip and that continues until the entire leaf dies and drops. The plants seem firm. Am I doing something wrong? They were beginning to do this before re-potting but it seems like that leaf-drop process has speeded up. They are all in my S room.