u/Last-Sky6103

I grew some Common Milkweed from seed as shown in images 1, 2, and 5. I also bought 5 Butterfly Milkweed from a nursery as shown in images 3 and 4. Any tips, ideas, or wrongdoings for me from the crowd? As well as one question. Why are my leaf tips on my common milkweed doing that. They have yellowish white tips that are crumbly if I touch them. Not all are like that only some.