That looks like Tree Mallow to me. Is that related to Variegated Malva? Are they the same thing (as "lavatera arborea" would suggest")? Here is a link that might be useful: tree mallow

Thanks all for the comments. Jack of Diamonds is virtually identical to Tokudama Flavocircinalis - so if you have one......though I have both and happy to have them. Olive Branch, I'd seen a few times on tours before I tracked one down. Then found a bigger one with multiple divisions at a garden club sale for reasonable. And two are better than one, right. An Orange Marmalade with more color streaks into center I think was main difference, I don't know how much different it really is, I guess we'll see in a few years as it matures. Though it's very curvy or twisted as it unfurls - I don't have any pics later is season that carry the waviness. It was planted in '11 and leaves burned due to sunny location. Last year we had some 90's very early that damaged the tender leaves again. Kept watering and # of divisions seem to be good, so maybe roots have caught up with sunnier location. Paul

I agree, herbicide drift. 2-4D can volatilize into a gas and travel far, into the miles if the conditions are right. Your neighbor might not care, but what about everyone with in a mile of you? Don't tear them out, water well and keep them well fed and they will come out of it. They don't look hurt too bad. Jay

Ammonia for slugs: TJ, I just posted what I've learned from over on the GW Hosta Forum. Most of the posts state 10% ammonia / 90% water. If you use 50-50 with good results and it doesn't hurt the plants (i.e. too strong a fertilizer?), feel free to stick with that. I have also just read that going BELOW 10% will not be effective. If you'd like, try cutting down a little at a time and let us know the results. I think I may try a little over 10% and work my way up to maybe 25%. Char