@FrankMosher and
@Turbosaurus, thank you for the great suggestions.
@FrankMosher:
1) Around when does Costco have those Carpet Roses? I'll set a reminder right for the date right now.
2) Do the Carpet Roses come back year after year, or must they be re-planted every spring?
3) About how many plants do you think would take to fill in the raised brick box around the front tree? (you are referring to the brick box around the front tree here, right:
The thread "What to plant around the base of this tree to add color?" in
Northeast Gardening forum - not one of the wooden bed boxes in the backyard, right?).
4) About how far apart do you plant the Carpet Roses?
@Turbosaurus, first time I planted tulips in NYC many years ago I did a thorough job with proper depth, bone meal and a layer of mulch on top. I mixed early, mid and late blooming tulips so the bloom lasted almost 2 months. Tulips came up for well over 10 years. I just can't remember how far apart to plant them - about how many inches apart would you say? Can you really cram the in there - like 2-3 in. apart?