In our database, there are 37 shrubs that have blue flowers, while there are no cacti/succulents with blue flowers! There are 77 trees with pink flowers. Among those, 16 have edible fruit.
How do I know all this? For some time we have had a "search by characteristics" engine for the custom databases like roses and daylilies. Today I am pleased to announce that this search engine has been extended to now allow the entire database to be searched.
You can access it by going to the Plant Database and then click on "Search all plants by characteristics".