One reason is because Rock gardens are generally pretty easy to create. You can use natural rocks and/or stones you find on your property, or you can purchase them from landscaping supplier stores. There are many types of rocks to choose from. I am using river rock from my land to maintain the natural look to my garden.
Brainstorm Rock Ideas
Now place your rocks according to your rock ideas plan. There are many options based on your aesthetic preference. I am a fan of making a border, or ring, to separate my hostas from the surrounding hostas.
Once you have deployed your rock ideas, lay out your plants approximately where you want to plant them. Refer to the spacing instructions on the tags. Once you have arranged the plants where you want them, start digging!
I have a lot of rock ideas that I plan to utilize in my hosta gardens. Out of all of the rock ideas that I have brainstormed, the one that I currently like best is placing my larger rocks next to my larger leaf hosta's. By placing my larger rocks next to my larger hostas, the leaves of the hosta are able to cascade over a corner of the rock, softening the contrast. I would also suggest planting a smaller hosta in front of the rock. If you have a small rock, try placing a single small hosta beside and slightly behind it for a similar effect.