The ADBLPs list reports self sterility/fertility but most of the self-sterile are monoicious species and will always have male and female parts in the same individual. As far as I know, dioicy is the exception and is not common in cacti. Maybe only a few examples can be cited? Or am I wrong? The li...

Stay indoors with the A/C on :lol: Do gardening (or pretty much anything that requires being outdoors...) early in the morning or late in the afternoon. Summer has actually been pretty mild for me...if mid 90s (mid to high 30s C) can be counted as mild. :) At the very least, so far no days approachi...

Mammillaria don't have woolly/spiny buds, which are quite distinctive on most species of Parodia.

Second plant looks like Parodia haselbergii.

Very interesting! I first learned that some cacti can have male or female sterility when looking through the ADBLPS seed list, which reports observed sterility/fertility, but I assumed that was just a particular consequence of the limited gene pool of plants bred in captivity.

The Astrophytum have really taken off this last month. Astrophytum asterias , slightly fasciated flower. https://imgur.com/xVW23y3.png a second flower from the same plant, several days later, also a bit misshapen. https://imgur.com/l1FHSjC.png Astrophytum myriostigma 'quadricostatum' , first time it...

The seeds may pop up every so often. I would not transplant the seedlings, but you can try picking out the ungerminated seeds with tweezers, let them dry for a while, then try again. The white seedling is weak and may end up dying.

Are Parodia, Notocactus and Eriocactus interchangeable? Yes and no. When labeling my plants I took a dive into Parodia/Notocactus taxonomy and it's messy. Your plant has been validly published under several names, including Eriocactus magnificus, Notocactus magnificus, and Parodia magnifica. Whatev...

The bristly areoles of the columnar cutting remind me of the flowering stems of Castellanosia caineana (formerly Browningia).
I am interested to see what others make of that Selenicereus since I have one that looks similar that I pinned down as S. pteranthus, but I was never sure.

fanaticactus wrote: ↑Sat Jul 16, 2022 3:38 am
I'll try to find several photos of that one. I've noticed that often the photos chosen for CactiGuide don't always resemble the descriptions. I think that's what sometimes throws me off.

I like to browse here for Mammillaria pictures: https://mammillaria.forumotion.net/f21- ... ias-a-to-z

Minime8484 wrote: ↑Fri Jul 15, 2022 4:52 pm
And, the seeds referenced from Phoenix Desert Seeds are actually Austrocephalocereus (Micranthocereus) purpureus, which is not the same species as Coleocephalocereus purpureus.

My mistake! I assumed the two were synonymous and didn't check to see if it was true.

Hello Guys, I am also struggling to find any Coleocephalocereus purpureus seeds on-line. Does anyone out there have some? both succseed and cactusstore/pheonixdesertseeds have some in stock https://www.succseed.com/en/seeds-cacti/coleocephalocereus/coleocephalocereus-purpureus-hu-359.html? https://...

Here's one more name to throw into the mix: M. pullihamata, a form with amber, always hooked spines that has been placed in synonymy with M. rekoi.

I prefer plants that look closer to what they look like in habitat, so I try to water and feed accordingly: sparingly and irregularly. I do realize that short of growing my plants in actual habitat conditions , I won't be achieving the look 100%, but close is close enough. :lol: I do like the cultiv...

Here's an update on these 1 year old seedlings, all but one species was harvested from my plants. Mammillaria karwinskiana subs. nejapensis https://imgur.com/0bEcP9M.png Parodia haselbergii , kept dry for the winter. https://imgur.com/m8FRujt.png Eriosyce villicumensis DJF 362 La Laja, San Juan, Arg...