Hello there, We own a nursery in Durban, South Africa. Just finished winter and moving into summer. A lot of customers complaining about oxalis (Yellow weed with bulb roots) taking over their lawns.
Can you suggest a way to manage the problem that is environmentally friendly?
PS Lovely site - easy to use
posted 11 years ago
well I have a lot of posts in this forum on my oxalia/ oxalis battles. More questions than answers. Though they compete for the same resources, they may just have to coexist with the grasses of my front lawn. Here in Santa Cruz California, this faux clover rears its head after spring rains, it likes wet and it likes shade. When it dries out it dies out. the best I can do is promote a thick tall turf, and mow a bit more frequently to cut the oxalia down as it grows taller quicker than my turf, so i just kind of cut its head off so the grass gets more light. I get some perverse boy like pleasure out of hacking the yellow flowers off with the push mower. Now, my rear yard is a party grounds and well trodden. the oxalia does not like this at all. it is only found along the edges there, perhaps it would be wise to have a dance party on your lawn.Did you know in peru there is a form of this plant that has been cultivated to have a large tuber which is eaten, so have some Peruvians over at this gathering and make sure they are hungry! We'll see over time who wins the oxalia or the grass. I think if you follow the organic lawn practices in the forum and just keep mowing at 3-4 inches but more frequently while the oxalia is having its growth spurt, the lawn will get an advantage. this bugger aparently goes deep and and has a little bulb deep down and thats why its so hard to eradicate. Id sure like to know what ph it likes. All and all its an attractive lawn covering in itself until it dies off, having deprived your grass of much light. We'll see this is my second year battle with it. the year lawn was newly sodded last year so its a bit of a different story and we rototilled very deeply, because we we're levelling the area as well. i think that killed a lot of it prior to sodding. I wonder if your climate is similar to ours?
Companion Planting Guide by World Permaculture Association