This is a very long thread and not such who is still reading to the end. For those who are able to get the purple or green leaf Oxalis they are extremely easy to grow. The corms or perhaps tubers can be planted just below the soil or even sticking out of the soil. Water evenly and allow to get somewhat dry between watering. Don't believe anything you have read previously about not watering when the leaves are folded down. It would be possible to only water when the leaves are folded and this plant would still do great. If the plant dies back do not fear, it will regrow with time and patience. It does better with some sun and warmth. I keep this plant indoors in the winter and during the colder months the more sun the better . If you want to fill a pot more more plants or if you would like to divide the plant to share it is quite simple. Dig up the tubers and observe they are segmented into smaller parts which are connected. These can be broken down into smaller segments or even down to individual segments. Each will grow successfully and produce an abundance of leaves and later flowers. This plant can be easily overwintered and allowed a dormancy period indoors. I simply bring it inside and leave it in the basement and provide nothing in terms of water or feeding. Everything dies back and when I am ready to have it grow again I simply water and within a few weeks it is completely restored.

I have oxalis. All around. The green with purple flowers. If they weren't so annoying, I would probably like them. and wait a minute! While I was trying to figure out my other hated weed, I found out it, too, is oxalis. It's a much smaller leaf, with small yellow flowers. I also fight with rattlesnake weed (Florida Bettony). It grows much like the previously mentioned, only it's roots and tubers grow further down and are much more fragile. We also have vines. Lots and lots of vines. Many of them have thorns. Fun stuff.

I live in Center Hill, Florida, and, Yes! Have Oxalis in the yard on the North side of the house. i thought I had it all dug up in January 2020....then, January 2021, it came back with a vengence covering a 40 ft x 12 ft area....took me awhile to dig it up...took 4 weeks, working 5 - 7 hours every other day....then, have the ones missed coming up....will not replug the area with grass until I no longer see new growth.....It is a MUST to dig deeply, so that the seed is removed with the stalk and leaves....I have seen the miniture "white carrot" root system, as well, with all the group of seeds at the top of the carrot....Weed be Gone or Round-Up won't touch it..just kills the grass.... This year I dug it up a shovel full at a time and graded every shovel full...put in 5 gallon bucket and would pour that into garbage...have new plants coming up in front flower bed and found few in the Floratam St Augistine grass....spread to neighbors yard about 12 inches and I went and dug it up...2 weeks later see new growth there...will go dig up again....BEWARE! If you don't get that seed at the bottom it comes back...that stem attached to the seed is fragile...so, fluff the soil around it after digging it up...get that seed! But, WEAR A MASK! Because I was on my hands and knees grading the clumps, the Oxalis leaves contain needle sharp crystals that can be inhaled into your throat and mouth....causing severe throat and mouth irritation...I know, because I have had it for over 3 weeks now and two trips to emergency room & doctors look at me like I'm crazy...leaves have needle sharp crystals that can be inhaled.....I checked all info I cound find on the internet for symptoms of oxalic exposure....Called Poison Control...they couldn't help ...no knowledge what-so-ever!!!! My primary care doctor told me to give it up....like I was crazy? I am older than dirt.....72 years old.....still digging in the dirt....but, I don't want ths poisonous weed in my yard.....found this site today....anrcatalog ucanr edu....poisonous plants ...ANRCATALOG.EDU Also, ...mayoclinic.org....treatment for calcium oxalate crystals...It showed Vitamin B-6 reduces oxalate in urine....have a high fluid intake to dilute it...use alkalizing agents like citrate inhibits formation of calcium oxalic crystals....plus fish oil....Mayo Clinic is in Jacksonville, Fl., and I don't have a driver to take me there...and doctors in Central Florida think I'm crazy.......So, don't take chances, this weed can effect your kidneys from what I have read.....and not one doctor did a blood test or urine test to get any results on me....and this oxalis can be deadly....so, use caution....Had a CT scan of my throat last week......waiting on the results to see if any damage has been done.....Be Safe......Your Friend Against Oalis.....Terri in Center Hill, Florida...04/24/2021 ...Good Luck!

I've been noticing a patch of oxalis (yellow flower) getting bigger each year in the lawn here in Central Victoria. I read that Metsulfron (Brush-Off, now beyond patent and now cheap) applied at the right time works well. I have tried it and it looks promising. The time is when flowering (winter) and the Metsulfuron actually passes to the bulbils and kills them at this time. I sprayed it 2 months ago and it has taken 6 weeks to die off and has left most lawn species ok (grasses etc) but not some other things in the lawn. It's a pretty rough "lawn" actually. It won't be till next winter that I will know that it has worked fully. The amount of Metsulfuron needed is quite tiny. It is supposed to be one of the less nasty of the hi-tech chemicals, but it does last for some time in the soil, so I'd not use it in a veggie patch.