umbrella thorn

Hello, I started growing vachellia tortillis from seed, and have been succesful with 6/10 of them. I have them in a 5:1 ratio of Riversand/compost. When should I replant them, what soil mix is best and any other advice are welcome. They are around 4-10 days old. (The one in the garden mix was...

Morning guys n gals, I have some umbrella thorns that I started from seed about a year ago. I repotted the 3 survivors, along with some new seedlings yesterday. I went with a mix of 50/50 lava and pumice, with some desert sand thrown in, as the reading I've done on these says that they like...