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You can plant after danger of frost has passed in your growing zone.

These links will help you.

https://www.gardeningknowhow.com/ornamental/foliage/ostrich-fern/growing-ostrich-ferns.htm
https://www.gardeningknowhow.com/planting-zones/

Height varies with the amount of moisture and nutrients the clumps can access. When located in cool-Summer climates, and growing in rich soil that is downright moist or even boggy in Spring, and never less than moist the rest of the year, fronds can top five feet. In more typical garden conditions—average soil and water in part or full shade—expect fronds to be two to three feet high. There is less variance in the height of the fertile fronds: sixteen to twenty-four inches. In ten years, a single starter plant could expand into a colony ten feet across or more.

http://www.illinoiswildflowers.info/grasses/plants/ostrich_fern.htm

Insects that feed on fern fronds include: sawfly and Lepidoptera larvae, cutworms, beetles, crickets and grasshoppers.
Treat the plants with Neem Oil.

https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

I see no issue with this. You may cut the dead growth off.

The ostrich fern is winter hardy in gardening zones 3 to 7, and it looks like all of Kansas is in zones 5 and above. Plants in pots generally need to be two gardening zones warmer than their usual rating when they are in pots, because the roots are exposed to cold more in a pot. So yes, you can place the fern in a pot for the winter or as long as you'd like.

Deer do not prefer ostrich fern but a hungry deer will eat whatever is available. As a side note from my experience, ostrich fern spreads pretty fast. You'll need to keep it in check or it will invade your lawn and adjacent garden areas. It needs water during hot, dry weather or the fronds will yellow and break.