Do you have a list of the plants you seeded in this area? Maybe a photo of the seed packets or a link to the website/company that sold the seeds?

Many wildflower or butterfly seed mixes have plants that are annuals. Annuals will not come back next year, but they might seed themselves. The seeds will grow/germinate in the spring. 

If your mixes have perennials, they should grow/germinate in the spring, but they might not bloom the first year. They might need 2 years before they bloom. 

I am concerned that the deer will eat the plants, especially when they are small. 

You might have to water the plants as they grow in the spring and into the summer. You will need to weed regularly to prevent grasses and invasive species from taking over. 

Thank you for your response. In the VM mix, there are 6-7  perennial clovers. two annual clovers like Crimson, and black-eyed Susans. 

In the butterfly next, there are 40 wildflowers 60 to 70% perennial. My question is specifically how to manage in year two and year three?
. I am OK with spraying grass specific herbicide once on the plot if needed. I am OK with frost seeding with broadcaster additional perennial clover  seed in February or Mar ias needed in thin/bare  areas  in the plot of mainly clover.

Recommend steps to maintain health of butterfly fields with 40 wildflowers 60 to 70% of which are perennial  flowers seed? spray?  Hand weed.?  Add certain perennials?  

That is the bee mix 6-7 perennial clovers….

in the butterfly MIX there are 40 wildflower…..

I can't give good advice without a plant list. 

I think you will have to play it by ear, depending on how successful year one is. Once you see what comes up and thrives in year one, then you can start planning for year two. 

You will probably have to use a few different methods to control weeds. If they are out of control in some areas and cannot be hand-pulled, like Canada thistle, you may have to spray with an herbicide. Otherwise, I would walk the area weekly and pull out the trees that are going to come up (mulberry, cottonwood, and other fast growing trees). 

Here are a couple links about prairie gardens that might help you think through management:

https://www.prairienursery.com/media/pdf/five-steps-to-successful-prairie-establishment.pdf

From the University of Minnesota "Planting and maintaining a prairie garden."

There are a bunch of resources on the MSU Pollinator Initiative website. Scroll down to wear it says "Resources for installation and maintenance of large-scale pollinator plots". 

Jackson County also has an active Conservation District. I recommend looking through the website and contacting them for more specific information about plant and weed management in Jackson Co.