Tigger's Green Paw
Japanese Barberry

Animal Safety: Dogs: No Cats: No Rabbits: No

Free Grazing: No

Japanese Barberry originates from Japan.
It was introduced into the USA in the late 1800s.
Although I could not confirm when it was introduced to the UK, I can confirm that between 1780 and 1850 was when a dramatic increase of exotic plants were brought back to the UK to grow and study. Where botanists were able to study and record their findings in botanical and horticultural journals.

Japanese Barberry usually live around 20 years, growing well in most soils and sites, even coastal, but they always prefer a bit of sun/partial shade 

They can grow to around 1.5 metres wide and 1.5 metres wide. It can take between 5 and 10 years to reach maximum height and width. As the foliage is dense, it is usually planted as hedging and other barriers.

Japanese Barberry flower in the spring with clusters of flowers along the lower side of their branches.

Japanese leaves, flowers and fruit are ornamental only and are not to be eaten by humans or animals. Even rabbits and deer that normally graze on shrubs, steer clear due to the taste and thorny branches.

Some countries now list Japanese Barberry as invasive as it competes and starves out native plants and greenery around it.
Due to the changes it makes to the soil, it makes it a more hospitable place for ticks.
Being bitten by a tick it could increase the risk of spreading lyme disease to humans and animals.