I don't know weather or not I should put in a top bar message: https://mountainherbs.net/
On one hand side it could be a bit distractive (I want visitors to go to the shopping pages) one the other hand I might place som keywords there. How important are top bar messages for SEO?
What do you think of them in general?
Just depends on what you want to write, and what H tag it is. If it's an H1 tag, then you will be left with multiple H1's across your site which is bad for SEO, as it goes against web standards.
How I would look at it is, Will having a top bar message improve my customers experience in any way?
It's better to optimise your site for your customers and not for seo.
You should and the reason for that is because when a user lands on your website, he/she is confused about what you do. There is text on the image which is not clear. Having a crisp title will help you position yourself. If users understand what you do, they would want to do more which implies >> more time spent on site >> lesser bounce rate.
In short: you would rather have a h1 tag in the top bar than a picture with a text (which is no tag at all), and you say the text should be clearer. My problem is a bit that I sell mainly medicinal platns but as well culinary herbs, perennial edible plants and berries - I am not sure if the message should address all three or only the medicinal herbs.
So what shopify does is it uses the alt tag of your image as it's H1 tag.
Right click - > view page source - > CTRL F - search for <H1 , and you'll all the info that is included in your H1.
Make a top bar message and see if the top bar message pops up as an H1 as well, if not, happy days.
I doubt it will be,
You do have 6 product pages that have multiple H1 tags on them though.