They like dappled light
One of the reasons hostas are so popular is that they are easy to grow. They generally thrive in USDA Hardiness Zones 3 to 8 and prefer fast-draining soils. While blue and green varieties can tolerate full to partial shade, yellow hostas require a bit more sun to bring out their color.
To keep them true to form, divide hostas in spring or fall rather than start them from seed. I recommend amending the soil with composted manure and sand or small gravel when planting a hosta, and adding a handful of slowrelease fertilizer. I also fertilize every spring just before the shoots appear. Annual fertilization is especially important for yellow-leaved hostas, which contain fewer food-producing chloroplasts and therefore are not selfnourishing. I also recommend mulching hostas the first year they are planted to prevent the heaving that can result from winter’s freeze and thaw cycle. I water newly planted hostas daily for the first two to three weeks, then weekly during the first year.
Hostas are tough plants that are bothered by only a few pests. Black vine weevils sometimes chew along the edges of the leaves, and they can be controlled with various insecticides. The most common hosta pests are slugs, snails, and deer.
Sanitation is the key defense for controlling slugs and snails. They gravitate to moist, dark areas, so be sure to clean up any leaf debris, especially in the fall. It is also a good idea to avoid watering plants toward the end of the day when leaves have little chance of drying before dark. Several slug baits are available that can also help with control. I have never found beer to be an effective control, but a home remedy I do use contains 15 percent nonfoaming ammonia and 85 percent water. I apply the mixture with a watering can at night, completely soaking the hosta leaves and killing all slugs and snails on contact. Absolutely no harm is done to the plants, and the application may be repeated every two weeks.
As far as deer go, I find barrier fencing to be the best method of control, but there are a number of repellent spray products that are also effective.