Yes, milkweed has invasive roots. The underground anchor of the plant in question (Asclepias) is a spreading system of rhizomes. It thereby permits milkweed to send roots in outward and upward directions.
Yes. Milkweed has very invasive roots that send runners underground and start new plants.
Flops are the aerial roots produced by the milkweed plant that form at ground level. These roots help the plant spread and stabilize itself in the soil.
Yes
No.
Fibrous.
It depends how close it is and how big it is.
They are a native insect that naturally feeds on milkweed plants. If by "bad" you mean are they an invasive or pest species, then no, they are not bad. Some people are allergic to their hairs though, so be careful with them...
There is common milkweed, purple milkweed, tropical milkweed, and swamp milkweed.
Yes. Although Common Milkweed (Asclepias syriaca) is rarely found on U.S. lists of allelopathic plants, extracts from its roots have been found to reduce the germination rate and seedling growth of field corn.
It is advisable to build flower beds away from possible invasive tree roots. Barring that, you can build a deep wall to prevent root intrusion.
Yes. There is milkweed in Jamaica. The Jamaican Monarch lives on milkweed.
Milkweed is not a decomposer.
Eggs on milkweed are eggs of monarch butterflies or milkweed beetles.