How do I reply to a particular comment? MatDZ, thanks for the idea but ai don’t think it is as it doesn’t have any spiky bits long the edges at all. Another strong vote for Black Gem. 1. It often doesn't have very spiny leaves. 2. Your photos clearly show some leaves with with a few teeth on their ...

Matucanas are generally not self fertile. It's not particularly rot prone for a cactus. It is, of course, far less tolerant of persistent damp than many non-succulent houseplants. The greenhouse is probably the best place for it over summer, but it is quite tender so will need some warmth when night...

It's hard to be specific, but in general, I'd expect a reduction in system efficiency as you add fans without adding more batteries and panels. In addition, the battery may be suited to lower load applications so may be less effective and/or have a reduced life if driving multiple fans. However, as ...

Is Opuntia humifusa self fertile? I have pods swelling under dead flowers. According to ADBLPS, yes. I sowed Opuntia humifusa seeds last year and more seedlings sprouted than I sowed seeds - several of the seed seemed to have double embryos and I think 1 seed may have had treble. I'd not noticed th...

After reading this thread, I was doing some googling and found this set, https://amzn.eu/d/6ubfwuW Don't know whether these are decent or not but they look quite solid and come with a controller and wires. From reading about it this just needs a battery and then 12v fans to power. I was looking at ...

ianstrutt wrote: ↑Mon Jun 05, 2023 4:34 pm Echinocereus davisii is not a plant I'm familiar with - one to definitely look out for in the future.

A.k.a. Echinocereus viridiflorus ssp. davisii

Here's Escobaria minima living up to its name. The flowering seedling is about 11mm across. I don't think I've ever flowered a smaller cactus, although Echinocereus davisii (e.t.a. - and Pediocactus knowltonii -) must have come close. Sown 16/3/2019, so not going to outgrow the greenhouse any day so...

A. barbadensis is a synonym of A. vera. There is a wealth of nonsense talked on the internet about these plants. Advice to reproduce them from leaf cuttings, magical healing and dietary supplement properties, etc. A pedantic insistence on incorrect naming is the just one of many sins. According to h...

Rebutia fabrisii?

But see if anyone who actually knows about Rebutias posts before writing up a label!

I think bubble wrap is most use for heated greenhouses - it keeps the heat in rather than letting it escape - fast - through the glazing. For an unheated greenhouse, insulation is likely to be of only marginal help. Insulation laid over benches will keep plants a little bit warmer, for a little bit ...