The good news is hostas are easy to care for. They like good soil, water and fertilizer. As for problems, deer and rabbit love them, as well as a foliar nematodes and virux X.
Slugs can crawl onto your hosta via their slime trail. They will then eat holes in your plants. At 40 degrees ground temperature, beware!
Deer like to eat hostas like salad, and rabbits love to chop them down. But control is easy.
As for a virused hosta, you’ll see flecks of green in the leaf, and the plant must be destroyed.
Foliar nematodes appear after July 15th. On the leaf and between the vein is where they appear. The area is brown.
Amending soil makes all plants happy. When you plant them then fertilize thereafter.
When planting, dig a hole twice as wide as the root ball. Add some compost or peat moss and plenty of water.
Hosta need proper placement. You must know their final size. If the plants are too thin or have too much white they will probably burn in the sun. While hosta are sun tolerant, they can only take so much. When watering, try to put the water on the ground rather than on the leaves.
If you like mulch, don’t put the mulch tight to the plant. You will attract bugs.
There is so much information on the web when you type in “Hosta Pest and Diseases” as well as using the American Hosta Societies as references.
This is a very short synopsis and is only a small piece of the puzzle. When you have a question call or e-mail me. I am here for you!