Such a nice article introducing clematis to those who haven't yet tried them!
We've been growing them for more than 20 years and enjoy seeing them return each year. Omoshiro is clearly my favorite and now we have three of them. These are some of my favorite photos:
Earwigs can devour the blooms so, if you know you have an earwig, or slugs, protect the base of the plant in early spring.
Using the Epsom Salt (one tablespoon to a gallon of lukewarm water) is probably the easiest and most effective way to keep the clem's happy, as you've mentioned, Anna. I use compost and manure until I run out of energy but some, like Jackmanii, never get fed because they grow too well and have to be cut back a few times from May to September.
Very nice article, Anna!