Cardoons are related to the artichoke. The ribs are edible in the case of the cardoon and the flowers (unopened) in the case of artichokes. The cardoon flower above has visitors: bees!
Then there are fruit trees on half barrels or on tied up as espalier fruit, both good for small spaces.
As I have mentioned, the moon garden has to be my favourite at the UBC Botanical Gardens. The centre focal point is the garden plantings of fruit, vegetables, herbs and edible flowers. The the African garden outside this centre point is another favourite. Brad and I plan to visit later when the autumn colour is at its best. Oh, and can you imagine the scene in the moon garden on a full moon? Have a look at the gardens when you're up this way. Every season has something to offer. Have a great weekend! - Volker