earthmind Posted February 11, 2014 Im a new member and a noob, so i find this thread helpful. Has anyone ever trialed diatomaceous earth for cacti and such? I have used it for bonsai with great success, although I find it can be hard to source at times. Share this post Link to post Share on other sites
Myeloblast Posted February 11, 2014 I've used DE to try and prevent/treat pests with mixed results at best. It was just difficult to work with in my situation. It has also always been a very fine powder when I've seen it for sale, so if you mean to use it in a soil mix I think it would reduce drainage and clog up the mix at any appreciable percentage of the volume. Share this post Link to post Share on other sites
hostilis Posted February 12, 2014 It's very easy to source where i am. It's posted all over ebay. I have had very good results by dusting my plants with it to get rid of thrips. Share this post Link to post Share on other sites
earthmind Posted February 12, 2014 I've used DE to try and prevent/treat pests with mixed results at best. It was just difficult to work with in my situation. It has also always been a very fine powder when I've seen it for sale, so if you mean to use it in a soil mix I think it would reduce drainage and clog up the mix at any appreciable percentage of the volume. I use it straight on its own. I uses the larger size, I think 7mm-10mm but I would sieve out the fines. It's very free flowing and holds a lot of moisture. I only have afew cacti at the moment which is in a mix I made, I'm unsure if DE would hold on to too much moisture for cacti. Share this post Link to post Share on other sites
