Mid-Atlantic Gardening: Plant It and They Will Come part 6, 1 by Gitagal

Gitagal wrote:
You are all scaring me!!!!

My ONE plant of Swamp Milkweed, in my raised bed, took til it's 3rd year to bloom.
It is getting to be quite a large plant with several stalks--all blooming this year.

PLEASE tell me this is NOT going to be invasive and just stay as this ONE plant!
If it is going to be invasive--I am digging it up and getting rid of it.
I DO NOT have room in this bed for anything "monstrous"....
Please let me know...... Gita

1--My Swamp Milkweed in June
2--Neww blooms on the growing plant
3 &4 --July, 2015

What is your verdict? Keep--or toss????

ALL I ever wanted in the beginning was a clump of Butterfly Weed--
with the pretty orange blooms.