strangebrew Posted May 26, 2005 What are these dark spots that are starting to appear in the middle of my seedlings? [ 26. May 2005, 03:46: Message edited by: strangebrew ] Share this post Link to post Share on other sites
gerbil Posted May 26, 2005 Areoles? Can't see anything in detail with that pic, just a wild guess. Share this post Link to post Share on other sites
Gunter Posted May 26, 2005 2 questions Are they on every seedling? Have you grown cacti from seed before? Share this post Link to post Share on other sites
strangebrew Posted May 26, 2005 OK I've put the bigger pic back up. Yes, it seems to be starting on all the larger ones and this is my first attempt at growing fom seed. So they're areoles? Cool! :cool: [ 26. May 2005, 04:03: Message edited by: strangebrew ] Share this post Link to post Share on other sites
philistine Posted May 26, 2005 hey strangebrew, this may seem like a dumb question, but what have you got them growing in? Was it something you bought as is in a bag? Strange as it sounds, Ive been looking for a good brand of sand for cacti seelings. Ive experimented with many pre-packaged and home recipie mixes and have been using " Manutec: Propagating Sand" with reasonable success.... But it needs a lot of sifting and washing to remove all the fine salty stuff (ok its probably not salt, but it does seem that way) Guess Im just looking for a lazy alternative... :D Oh, and my spin on the dark spots is either aereols or just the seedling developing more chloroplasts therefore more concentrated amounts of chlorophyll [ 26. May 2005, 06:22: Message edited by: philistine ] Share this post Link to post Share on other sites
apothecary Posted May 26, 2005 Nice lookin babies strangebrew Share this post Link to post Share on other sites
Gunter Posted May 26, 2005 Things are going well for you! They look happy to me. Areoles is right. Share this post Link to post Share on other sites
strangebrew Posted May 26, 2005 Sorry phil., I can't give you an easy way out. It's just plain old hand-sieved sand, it didn't really take that long to do with a bucket of water. It's shiny looking because I just gave the seedlings a spray not long before I took the photo. Share this post Link to post Share on other sites
Rev Posted May 27, 2005 sifted searles cactus mix or 1/3 coco : 2/3 riversand + perlite for openness sterilise at 15 psi 20-30 mins not my mix but i use it with success Share this post Link to post Share on other sites
strangebrew Posted June 13, 2005 Algae has started rearing it's head - some of the sand particles now look green! Can this be controlled in any way? I found one reference about using Hydrogen Peroxide. Would dripping this carefully onto the algae be OK you think? Share this post Link to post Share on other sites
apothecary Posted June 13, 2005 Half strength copper oxychlor(ide?)(ite?) Share this post Link to post Share on other sites
