Any broadleaf evergreen will produce flowers. Even though they might be tiny and you not notice them, the bees will :-) Conifers do not produce flowers as most of us recognize them so no nectar production that would attract bees and they are pollinated by wind, seldom insects. If you don't want any bees, go with a conifer. FWIW, the flowering period of most broadleaf evergreen shrubs is relatively short, so the bees don't hang around long - when the flowers are over, they move on. And when they are present they are busy - they won't bother you unless you bother them. Boxwood is a very common, almost ubiquitous, hedging plant and is used in similar situations with great frequency. And it is appealing to bees when in bloom but that does not discourage its use for this purpose by 1000's of homeowners. You may be being a bit overcautious :-)

Thank you for posting your pictures. I just picked up one of these a couple weeks ago and am still deciding where to plant it. Think I have a good spot now =)

Clematis for part shade... please see link. I have a marvelous arbor (custom built, redwood) with a bench underneath. While I agree that it stands very well on its own, I won't be sitting there much until I get a vine to cover it so I can have some more shade. :) Be sure to check on the ultimate height of your chosen clematis; this can vary a lot. Check laspilitas.com and see if you can get a CA native! Some are loved by hummingbirds. Here is a link that might be useful: part shade clematis

The most common type of common sunflower (Helianthus annuus) for micro greens is oilseed sunflower used for making sunflower oil. The seeds are also used as bird feed since they are meatier and have a higher oil content, giving birds more nutrition. Seeds of all varieties of Helianthus annuus are edible to humans.