A tuna fish can makes a great, economical water gage. Ground level watering is best but overhead watering is fine if you water in the mornings so that the plants do not go into the night with wet leaves. I have a lot of shade in my garden. Some roses may grow reasonably well in partial but not dense shade. Albas and hybrid musk roses plus those marked with black dots in the descriptions are recommended for partial shade.
All roses do well in full sun.
Most roses do well with 6 hours or more a day of sunlight with some needing as little as 4 four of sunlight. Our own-root roses may stay in the pot they arrive in for a month or so. You must keep them well watered so they do not dry out. Water every day in warm weather. If your ground is not ready for them we suggest you pot them into larger pots.