The organic and better-for-you food products are a subset of the larger food manufacturing industry. This page contains resources to research the much broader packaged food manufacturing industry, as well as the more narrow organic and better-for-you products industry sector.
Make sure you use multiple sources to get the most well-rounded view of the industry as possible.
IbisWorld is a great place to find reports to get a broad understanding of the packaged food industry.
IbisWorld will have reports for "organic food stores," but not about specific products. As such, your best bet may be to look a general food manufacturing reports (such as juice, soda, etc.)
Also note that while there may not be a report for "jelly manufacturing," a report such as "Vegetable and Fruit Processing" would be very relevant.
The industry reports in First Research compliment IbisWorld for a general understanding of the industry
First Research will have broad reports for Food Manufacturing, and also more narrow reports such as Snack Foods, Bakery Products, etc.
The resources below, while also having information about the larger packaged food industry, are ideal for finding information about the smaller organic food and better-for-you sector. Suggested search terms are included with each tool below.
To find a huge number of reports on the topic, from the Passport home page:
These publications and more can be found by searching for articles in Business Source Complete. Limit to "trade publications" to find these publications and others like them.
Below are a few trade sites and organizations that provide useful information grocery stores industry. I will add to the list as I discover additional useful links. Note that these links goe to the free websites. We do not subscribe so some reports may be behind a paywall.