Undated Handout Photo of bedding geraniums/pelargoniums. See PA Feature GARDENING Advice Filler. Picture credit should read: iStock/PA. WARNING: This picture must only be used to accompany PA Feature GARDENING Advice Filler.. Ordering online doesn't have the same thrill as a wander through an aisle of violas or pansies – but now the garden centre experience is back, as of Monday, albeit with masks and social distancing. To celebrate back to nursery week we've brought together a list of twenty of the best garden centres to visit in Scotland. Most are opening on April 5, but where they are delaying opening that fact is noted.