I saw this plant on the street. It’s growing where weeds are supposed to grow, but it has big green leaves so I’m wondering what it is. I’ve never seen a plant like this grow on a sidewalk ledge.

I live in the Caribbean, so this gets tons of sun, it grows in a space where weeds grow, and it only receives rainwater.

Can it grow in a pot on a rooftop?

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  • 1
    Looks like a member of the Brassica (cabbage) family, but I am not sure what species.
    – benn
    Commented Jan 12, 2019 at 20:34
  • 1
    if you break a leaf is there white sap?
    – kevinskio
    Commented Jan 12, 2019 at 21:31
  • Sorry for the delay. I just looked today and it does have white sap.
    – rbhat
    Commented Feb 10, 2019 at 17:35

2 Answers 2


This is a tropical milkweed (calotropis). You can cut off a branch, root it in water, dip in rooting hormone and plant in sandy soil. We have three right now rooting. It is a weed so you could also dig it up and pot it (great for butterflies).


Which part of the Caribbean? It looks like Tectona grandis aka Teak. More pictures would make it easier to identify. You can try posting it to iNaturalist where I'm sure tons of experts wouldn't mind helping you out

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