It means Clychau'r Gog
clychau'r gog; croeso haf
'You' is not a Welsh word.
The scientific name of the flower bluebell is Hyacinthoides non-scripta.
It doesn't mean anything in Welsh; it's in English.
Do you mean 'What is the Welsh for witchcraft?' That is 'dewiniaeth'.
It's not a word in Welsh.
"Gabrielle' is not a Welsh word.
It's not a Welsh word.
'Carley' is not a Welsh word.
It's not a Welsh word.
It is a weed if you do not want it in your garden. In England, the Spanish bluebell is invasive and will hybridize with the English bluebell. The native bluebell has a sweet scent and a narrower leaf than the Spanish.
'Sorry' isn't a Welsh word so it has no meaning in Welsh.