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I buy the concentrate and dilute as instructed. When I next buy some I will be buying the commercial strength as I get through quite a bit in the warmer months! Spraying underneath leaves is the most difficult bit for leafy plants, a bit easier with my cacti!

I use SB invigorator (https://sbproducts.co.uk/) to control spider mite on my cacti and succulents (and orchids in summer) due to the lack of other options over here. It works physically so supposedly pests cannot build immunity but because if this it needs to be applied regularly. I try and do...

I've used expanded polystyrene in the bottom of deep pots before and really dislike it. It breaks apart too easily when you're repotting leaving little bits of polystyrene everywhere.

https://horticulture.ahdb.org.uk/knowledge-library/co2-best-practice-guide-background#:~:text=Increased%20CO2%20levels%20will,and%20faster%20flowering%20per%20plant. There have been a few studies citing the benefits and it is used in some highly intensive horticulture systems but the real world...

Similarly, I use a Google sheets so I can access it on my phone for quick updates or on a laptop for bigger changes. Make sure you log the date you got it and the source.

I grow a few hundred a year. I have ordered from Mesa Garden (mainly Lithops, not cacti) a few years ago and found the seed accurately labelled and decent germination rates. One tip, don't cover the seeds (many need light to germinate) and don't be in too much of a rush to pot them on.

What is your traditional Christmas day lunch if you have turkey and all the trimmings for Thanksgiving? Or is Christmas just Round 2?

Having visited and slept in the Borneo rainforest I can say that there are definitely temperature differentials between night and day! It doesn't get cold at night but, without the sun, it is noticeably cooler and feels less humid at night. I didn't take a thermometer with me on this holiday to...

https://firstrays.com/semi-hydroponic-culture/general-semi-hydroponics-information/ My holes are around 3/4" on the smallest pots getting a little higher up for bigger ones. Don't know if that is right for everyone but it seems to work ok for me.

First of all is this a UVC (clarifier) or a UV steriliser? The two are different and the UVS should have a much smaller maximum distance between the lamp and the furthest distance water can travel from it. A UVC will not kill most bacteria but is strong enough to disrupt algae running through...

Over here there are small plastic fixings (Wholesale Ali Plugs | JFH Horticultural Supplies Ltd) that fit into the channel in common aluminium greenhouses that hold bubble insulation quite well, but I'm not a fan of using it if at all possible and if I was looking at leaving something up more...

I've used it too. Make sure you get UV stabilised bubble wrap or it will degrade quickly in the sunlight. Some cactus grower's keep it up year round to act as shading in the summer too.

Lovely flowers. Great colour.

Excuse me? I'm not a published taxonomist but I can read a description and follow it. All the leucochilum descriptions state a pure white pouch therefore if it doesn't have a pure white pouch it should not be called that at any taxonomic level. As I said in an earlier post, this is not a...

Just because they were called leucochilum doesn't make them so!

I didn't know it had been formerly published as forma. Glad it has as this is definitely the right level of taxonomic distinction if the only difference is the flower colour (or part of the flower colour)! Tsk, tsk on the photos though! 🤣🤣🤣 As to agreement of a name, any name validly published...

Nice godefroyae. 😉

Nice plant but can't be f.leucochilum with that pouch!

Fantastic!

First thing I would do is self it to see if it is truly genetic or simply an isolated issue with this plant. After that then experiment with crosses once you know it is a heritable feature.