Acer palmatum 'Mikawa yatsubusa'

6th April 2024 and the lime green new leaves of my Mikawa yatsubusa first thing this morning.

 

This makes 3 Mikawa's that I have. I think have a problem! Lol. D, send me the number to Acers Anonymous.

 

Couple of mine, lovely Acer imo.

 

One in Morris Arboretum, PA, USA.
May 14, 2024

 

Hey everyone,
Do we know where Mikawa yatsubusa originated? The MS database lists a date of 1972 but no other origin information, and none of my other sources including Vertrees have the info. Do we know whether it came from Japan, Europe, US, etc.? I'm just assuming it was from seed since it and many of it's offspring are so consistent/stable, or does that only apply to variegation?

 

In 'Book for Maples' Yano states that it is "a cultivar grown in Aichi Prefecture" so I would wager on a Japanese origin.

Unsure on the seed origin vs some kind of spontaneous mutation, but we can at least rule out witch's broom as lacking several traits for that origin.

 

Can someone shed to light is this a effect of pruning or fertilizer or both

I just added another MY to my collection.

My 1st one has a short fistball sized stump that is about 6 inch with 3 or 4 main stems coming out of it. From there, is multiple stems that form a cup shaped framework.
On the new one I just added, it's a singular long 4 ft leader, with stems on the top, stems midway and some stems below the main leader.
I haven't received this one but I believe the single long leader may have been field grown and then -potted- in 2024 to re-establish root structure for market


Is it simply the effect of -limbing- it up that creates how the shape is so radically different
I just added the single long leader on an impulse buy today, just understand why the -framework- on these are so radically different.