There are a lot of ways to increase organic traffic on a blog, some of them are listed below:
- Do SEO - Create backlinks and high quality content
- Do Keyword research and create keyword targeted content
- Publish blog posts on daily basis and share them on social media
- Submit your site to search engines and also submit the sitemap and target an area
- You can also kick-boost by advertising your website in search engines for a month, it will help you
However, there are so many other ways to do it and you should tell me your website URL and niche so I can recommend more tips and ways.