More like 'eternal' than 'perennial' when they're happy. They spread by seed or sharply-pointed runners which will easily go through the bulbs of other more-preferred species. And their older bulbs can go down 12" or more, like a string of beads. Do brilliantly in a sandy/silty soil. Don't mind shade but you'll get more leaves than flowers. Calistoga is not kidding. They're delightful - in someone else's garden.

Just want to add that I disagree with it being somewhat invasive. I actually think it's fairly invasive. This stuff is growing rather wildly around my area. I frequently see it growing on the sides of roads and in the middle of pastures. Less known to me personally, botanists have been saying that Lantana camara has been cross pollinating with our own native Lantana depressa creating hybrids and rapidly depleting the number of depressa's in the wild.

I did a search for florida tropical nurserys and found a tropical web site. It makes me really think it is that tree, or is it a bush. Pretty weird it is tucked in there like that. However it is surrounded by palmetto bushes and it says it blocks plants near it. Oh well, palmettos have their own minds! Now I have to find out if it is ok if a cow eats it as we are going to fence off the front for an alternative pasture for our 2 cows, to give the regular pasture a break. I can't believe how many things are nasty for a cow! Wow, I couldn't use the words top and another specific word together, I got a spam warning. Seems that company has been causing spamming problems, or they got hacked and spamming is going on.

Actually I don't think it IS Pyrostegia, which is a vine with pronounced tendrils, , and your plant has much larger ribbed leaves. Ian can you have another look, I think it might be some sort of Acanthacea - justicia or something similar.?