A few trays of strouting seeds Two trays of A. palmatum 'Shigitatsu sawa' and A. shirasawanum 'Palmatifidium'. I doubt any are shirasawanum, but my fingers are crossed. One tray of A. pubinerve (wuyuanense)
Wow, great crop of pubinerve. It will be interesting to see how hybrid they are. I was just looking at a couple of (now quite large) tutcheri seedlings, you wouldn't guess they're not regular palmatums. I have a few A. floridanums coming up, will be interesting to see the variation there too! Excited about these. @maf those pentas are in a hurry now!
Yep, warm enough to keep them in the greenhouse full time now and they are loving it. I have a hundred litres of perlite being delivered this afternoon so I will soon be able to get them into a better potting mix and bigger pots.
These are some of the trays in which I've put some standard acers palmatum seeds around in mid-November. They spent the whole Winter outside, and started to germinate around March I believe - I posted a picture of the first ones coming out in this thread Again this year, I have a really good germination rate, I am happy with that! Although I also had a few seeds from a Koto No Ito and none has germinated so far. I did a test: in one tray I've put seeds with their wings still attached, and in another seeds without their wings. Removing them seems to have made no difference at all. So next year, I probably won't spend the hours clipping the wings :) Now, I think it's time to pot some into small pots like I did last year (7cm ones). I'll start this week end. Although I am a bit worried that I would lose some as some are very close to each other. I am not sure what to do if the roots are entangled. Shall I try separating them, or just planting them together in a pot.
Personally I would give it a few more weeks first. I like to wait until the first part of the stem feels tough like wood. Some of the bigger ones might be ready but most look as if they are not. If the roots are entangled just rip them apart.
Considering the number of seedlings, I wouldn't hesitate : the vast majority, if not all, will live - in my opinion...
3 years ago, I obtained 3 plants from A. shirasawanum 'aureum' seeds (after only 1 cold stratification and no one after a second cold stratification). 2 of them have green 10 lobed leaves , the third, a very slow grower, seems more remarquable , it is a pretty colored little tree.
Very pretty Pierre! If it stays slow and small, maybe you will have created a "dwarf Jordan" variety. That would be a very useful form in many gardens!
@emery here are a few A. pubinerve from 2020. I'm sure all might be hybrids. Buts one seem to be very close to the parent tree as of now.
Update: some of 2022 A. pubinerve seeds A. palmatum 'Shigitatsu' seeds and they are still germinating A few of my 2020 japonicum seedlings
2021, OK, but the 2022 are so small that it doesn't deserve photos. "Rich-10" : a lot of differences between the seedlings. So far, they were in total shade, maybe some will keep their red colour longer if they get more sun : These are all from the same 'dissectum atropurpureum', except the one in the top left which is a year older (can't remember where it comes from) that has very dark red dissected leaves.
Hey Alain. I soaked them for 48 hrs., kept them in the fridge for about 4-5 months. Only 2 or 3 germinated. Then the rest went into two seed trays that stayed outside until the following spring. The squirrels manage to get into one :(
These are still waiting to be separated. I was so surprised with the germination rate. I would have been overwhelmed if the squirrels didn't get to the other tray.
Update of the bigleaf maple seedlings. If you guys are wondering, the large seedling was treated with diluted ga3 water, and it shot up like a rocket. Its important to use fertilizer with ga3 as well so the seedling can support all that growth
i fertilize my seedlings, due to my impatience. i want fast growth. i use ga3 sometimes to make the slow maples grow like a silver maple would
I only fertlize my seedlings when I first repot them, with slow-release fertilizer (osmocote type). I also used another fertilizer for my "Atro dissectums", and it works very well. I also used a slightly "improved" mix, with akadama thgis time, maybe both had some effect on the growth. Otherwise, I don't use much fertlizer, maybe once or twice in the season (6-6-6 liquid cheap fert.), or some with chelated iron and magnesium when I can see some chlorosis.
