Agreed!

In terms of difficulty:benefit, a binary invasive flag would get most of the way there. E.g. English Ivy, Bradford Pears, Mexican Petunia, creeping bamboo.

Buuuuut... this looks like it's mostly for house plants, for which invasiveness is less of a concern.

However, I think it should mostly generalize to outdoor plants as well.

At least in the US, you could simply add USDA hardiness zone [0], which roughly indicates the boundaries a cultivar can survive winter (freezing) and summer (heat), and is almost always listed.

I'd be shocked if there wasn't a zipcode-to-USDAH converter out there.

[0] https://en.m.wikipedia.org/wiki/Hardiness_zone#United_States...