For this it was 60% vermiculite, 20% coco coir, and 20% a combo of pumice, scoria, calcined clay and zeolite.

I tried an experiment where I didn't heat-sterilize my soil before sowing some seeds and putting them into a ziploc. I relied on Physan 20 (2.5 ml / 32 oz boiled rain water) to treat seeds and soil. Two weeks later I have these little spheres of black mold/fungus?/whatever growing on the surface. An...

I have not had the best of luck with roseoluteus seeds. The first batch I sowed was from my own plant and I got zero germination. Another batch had decent germination but only about 3 seedlings survived. They seem a bit more finicky than other seeds I have had success with.

Thanks, all for the replies. I guess I'll just go with myriostigma!

I've had this one for a long time and always thought it was A. myriostigma columnare. But it might be myriostigma tulense. How can one tell the difference?

Diane wrote: ↑Wed Mar 18, 2020 11:06 am Maybe Mammillaria rekoi ssp. leptacantha? Hopefully someone else will confirm, or suggest a better match.

It does look a lot like that Diane. Thank you.

I bought this one without an ID tag from a roadside shop. Anyone recognize it?

In the last couple of years, I've been watering all my C&S with Ericaceous Miracle Grow. Mostly, they seem to be doing very well with it - although improvements could also be due to better lighting, ventilation etc too. Ralph, 2 questions: What's the difference between regular Miracle Grow and ...

I do find plant nutrition a fascinating topic of study and a very difficult one at that. I have a strong suspicion that what we think we know is going to be wrong, and I don't mean you and me but science in general. ammonium based fertilizers are more rapidly converted into amino acids than nitrate...

I do find plant nutrition a fascinating topic of study and a very difficult one at that. I have a strong suspicion that what we think we know is going to be wrong, and I don't mean you and me but science in general. ammonium based fertilizers are more rapidly converted into amino acids than nitrate...