I was going to say the same thing but waited. If it is something that you have planted in rows, 18" apart, then its got to be some garden veggies not morning glories. So, as Fatamorgana has suggested, it might be sweet potatoes. I have not seen anything other than morning glories with three-lobed leaves. Never planted sweet potatoe. Passiflora Incarnata has similar leaf shape, but I doubt that you planted that one.

It looks reasonably Magnolia-like to me as well, but I couldn’t ID the cultivar from this distance and without flowers. Magnolias vary a fair amount in hardiness depending on cultivar. Regardless, if you are much colder than zone 6, growing in containers doesn’t work well for most plants because the roots get much colder than in the ground when the containers are so exposed to cold air on all sides, unlike roots in the ground that have more natural insulation. where are you generally and what is your USDA growing zone? Are you planning to grow plants in a container or in the ground? The NYC area is zone 7, and potted plants there should be at least hardy down to zone 5 if they are likely to survive. So it might be one of the smaller, hardier magnolias like ‘Jane’.

Late hard frosts can kill the flower buds too or do significant damage. Azaleas can flower great one year and be poor the next. When it hits just right, they are spectacular. They looked their best back in 2016 (Pink Ruffles and George Taber) But Mildred looked great this year on the first day of spring while others are just starting to show. Encore azaleas have two blooming periods but not as good as the older spring bloomers. My wife doesn't care for them at all but I have bought 'Autumn Twist' which looks pretty good but yeah, it doesn't bloom very full later in the growing season. Here is my biggest Autumn Twist. Another great one is Hilda Niblett - short, very wide late bloomer (usually in mid to late May).

I agree with Gardengal. However, mine, (which are outside in the ground) bloom in the winter. Nice looking plants, Johnny.