Yes you can. And the amazing thing is you'll be rewarded too if your posts are good enough
There is a wordpress plugin named steempress.io. It is a project intiated by @fredrikaa @howo for the users who has an ongoing wordpress blog. With steempress you'll be able to-
Automatic posting of articles to the Steem blockchain
• Conversion and cleaning of text to look good on different websites
• Automatic self-vote
• Add an original link to your blog
• Custom tags for each article
• Default tags if no tags are defined for an article.
• Optional posting
• Bulk posting
• Post scheduling
• Multiple steem account support
• Add (or not) the featured image on top of the steem post
• Category filtering
• Custom footer on steem
source-(https://wordpress.org/plugins/steempress/)
And the amazing thing is that you will earn steem through using steempress. they'll reward you generouslly if you post brings value.
To know more visit steempress on steemit-
https://steemit.com/@steempress-io