It shouldn't be such thing: "cacti eat rocks"!

Not any more: Hexalog is buried. Earth is not flat.

And my apologies for being blunt about it, but 8-foot tall columnar cacti aren't suitable as houseplants -- they really need to be outdoors where they get plenty of sunlight and good ventilation. That was my first thought when I saw pictures. Even in a greenhouse these cause lot of problems for gro...

oh, yes. And check if the rot is going down the stem.

Groundhogs hibernate in winter. But one sunny day they emerge from the burrow and remind us that soon spring comes. https://live.staticflickr.com/65535/53502630017_231a2bfd17_c.jpg Maybe in 6 week (or more in Canada), maybe sooner, so not much time for winter repotting is left for us. Next will star...

Luckily, our winters are generally very mild, so I actually might be able to figure something to keep them outside in all but the deepest freezes.

Like these days, ha? We are staying in -30s C 4 days already...

Yea, these cacti or parts of it often lay on the ground so they are trying to root. No matter now hard the grower tries to keep the plants upright.

Hello, i never heard about repotting cactus in winter, for me it seems like a joke (sorry)... Im planning to repot a few cacti in spring before first water, is that ok? It is OK, if you can do it all at once. But if some of them are with buds or start to bloom they may not like it and drop some of ...

Where I am at,cacti have to come inside early October. With no greenhouse,that means low light,very little water,and relatively cool temps. In theory they are dormant,or growth has all but stopped. So it is a perfect time to re pot. March or April when they come around they are good to go :wink: Th...

Any time generally is good to re-pot a plant but since in winter (November till April) most of my cacti are in relative rest, not growing and held mostly dry this is the best time to change pots and soil for me. Even I started in October : bringing some outdoor plants bare-rooted indoors before firs...

Seeds came from Mesa Garden. Even with a field number L1495.

Which seems based on this site to be quite rare.

The articles about the species of Haageocereus here are written about 20 years ago. Since then many species became widely available even in box stores.

"Haageocereus species" means an unidentified specimen of genus Haageocereus . Most likely this is Haageocereus pseudoversicolor or Haageocereus versicolor, often considered synonyms. Can be H. acranthus as well. Better wait to see their flowers to be more or less sure about this. I would a...

Tubercles change with age, spines differ in color when wet or sun-bleached, also from variety or field number. Don't have seeds from those even I have had 2 plants for many years.

Those Mammillaria huitzilopochtli ssp. niduliformis are beautiful! How old are they? I've got these as seeds in 2013, so ~ 10 years old. Eight plants survived till now. https://i.postimg.cc/QtFZwQzV/IMG-7649.jpg https://i.postimg.cc/ydLrWvWB/IMG-2336.jpg My old T. bonatzii prepared just 2 - 3 flowe...