Boxelder, Ashleaf maple
Acer negundo

Yellow leaves of Acer negundo

3 leaflets

Acer negundo ssp. califolnicum
but the character unidentified

uncertain lobes

Germination from seed

Plenty of seed

Tree appearance at Flower Park , Hamamatsu

Let me show you some cultivars of Acer negundo.

Oh-han-negundo(Musashi-Shinrin Park)

Acer negundo 'Aureo marginatum'

Acer negunndo 'Flamingo'

Acer negunndo 'Kelly's Gold'