Yes, it is poisonous; don't eat it. But just touching it is safe, it won't give you a rash in the way Poison-ivy can, or some other plants like...
Updated thread title to follow POWO: https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:1800-2
POWO accept it as a distinct species now; I've updated the thread title. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:1948-2
I've updated the thread per POWO's taxonomy; they now split Acer lobelii as a distinct species:...
Small-leaved Lime is monoecious, it doesn't have separate male and female trees. But it is outcrossing; pollen from the same tree is likely to...
Shall we start a campaign for 'Arbuti '? :-)
White Mulberry (Morus alba). Aims to be a tree, though often a bit shrubby. That one (only around 4 or 5 years old) is probably too young to have...
Probably more 'too dry' / 'too exposed', than 'too cold'. I'd think perfectly growable there if you can find a sheltered, moist microclimate. But...
I'd say Acer × freemanii (A. saccharinum × A. rubrum). The bark pattern looks like multiple repeated drought cracks covered over by subsequent...
Agree - but it's also true that oaks can start bearing acorns by 25 years (and occasionally even much younger), so they are physiologically mature...
Holm Oak Quercus ilex. Naturalised, and locally invasive, in southern England (and it too, also has a lot of variation in leaf margin spininess!).
18 years of global warming making a big difference. I've noticed the same here with warmer-climate trees that used not to mature fruit and...
Looks badly diseased to me! Not at all attractive, burnt, crumpled and damaged leaf margins. Does the 'x' in the thread title have any significance?
Worth giving it a try. And monitor the results, to see what happens!
Gave up mowing the lawn several years ago. It is now steadily disappearing under a sea of flowers. Rather pretty :-)