Make sure they have full shade. Water once or twice a week only.
There are no tricks or secrets to grow Hosta. They prefer more shade then sun. Newly planted ones should be well watered until established. After the first year of established growth feed them with a water soluble fertilezer in the begging of the season. Through the season be alert for slugs and snails as they are a bad culprit.
They do not like full sun, but mine are growing in the sun. We add banana peels and coffee grounds to ours and that makes them grow so good. We do not fertilize them because they like the potassium from the banana's. I have a friend in Wichita and her's are huge. Good luck
Shade, and read Karen from Plattsburg's post. Sounds good to me.
Get some copper mesh wire to put around them in the spring. The slugs won't eat holes in the leaves.
I'm with Irene , the trick is SHADE I had some in a row which show me the
ones in shade were beautiful the other pitiful.
All of the above are pretty much what you need to do to them. After a couple of years you can split them in half, they tend to grow very large; I had some that grew over three feet in circumference.
These answers are all just great....I do have one thing to add regarding watering...if you don't already have a drip irrigation system installed, which would not drown and rot the root system which is very lush.....water overhead allowing the rivulets to run down the leaves to the base of the plants....BUT MAKE SURE THEY TURN IN FOR THE NIGHT DRY.....for me that means early morning watering, even if there is a heavy dew.....this helps to deter the slugs, as well.....I have watched a slug travel up a plant it didn't want to get to a plant it did want...they are not as dumb as they look....when I go slug hunting, it is in the early morning, they are tired from traveling all night, the morning dew makes it easier for them to get around...and they hide in the grass we lovingly tend to frame our flower beds......as soon as the sun shines they hide until evening......I am in stealth mode with a container of salt water to "pick and plop"... using my medical rubber gloves for easy grabbing...then I just peel them off and dispose along with all of those dead slugs.....
cedar mulch with I little 10=10=10