Search found 7371 matches

by DaveW
Thu Mar 28, 2024 10:44 am
Forum: Cultivation
Topic: Limestone top dressing
Replies: 9
Views: 186

Re: Limestone top dressing

I have used limestone chips, about quarter inch in size as a top dressing in the past, when I did not want to include them in the potting soil. These were obtained cheaply from a local builders merchant in the UK for spreading on bitumen felted roofs to keep the sun off and render them more fireproo...
by DaveW
Thu Mar 28, 2024 10:15 am
Forum: Cacti Identification
Topic: Is this an Acanthocereus tetragonus or subinermis?
Replies: 7
Views: 293

Re: Is this an Acanthocereus tetragonus or subinermis?

Excellent researched post on the subject Oneday. =D> Inermis means unarmed or spineless, therefore subinermis means almost spineless or less spiny? Of course botanical names do not have to be appropriate and later often aren't, but usually are when the species was described. Britton and Rose picture...
by DaveW
Thu Mar 28, 2024 9:49 am
Forum: General
Topic: Spiral
Replies: 1
Views: 27

Re: Spiral

Our plants have a tendency to spiral and all areoles are arranged in a spiral pattern. Seemingly the degree of stem spiralling depends on the concentration of auxins at the growing point. "So how do plants produce organs at regular intervals? Biologists knew the answer involved cells in the gro...
by DaveW
Wed Mar 27, 2024 9:43 am
Forum: General
Topic: Resurrection of Echinocereus schmollii
Replies: 4
Views: 97

Re: Resurrection of Echinocereus schmollii

Pruning, akin to a near death experience, prompts plants to grow, flower and set seed in order to pass their genes on before they die! :D Pruning of most plants promotes new growth.
by DaveW
Tue Mar 26, 2024 10:26 am
Forum: General
Topic: I am 45.If it is late to sow Ariocarpus seeds?
Replies: 9
Views: 142

Re: I am 45.If it is late to sow Ariocarpus seeds?

David Quail, a grower in cold old UK, raised dozens of these supposed slow growing cacti from seed and regularly sold them. You should even manage the very slow growing Aztekium ritteri and flower it by the time you are 60! He has just moved house and stopped selling I believe, but detailed his meth...
by DaveW
Fri Mar 22, 2024 10:16 am
Forum: Cacti Identification
Topic: Need Id for this cactus
Replies: 4
Views: 242

Re: Need Id for this cactus

Possible, but hard to tell from the picture. The base does have some spines the top does not. Grafting on Lophophora is not likely since most grafts are done on Cerei or Echinopsis to speed up growth. Trichocereus being a favourite hardy stock.
by DaveW
Wed Mar 20, 2024 9:55 am
Forum: Cacti Identification
Topic: Need Id for this cactus
Replies: 4
Views: 242

Re: Need Id for this cactus

Looks like it was originally hard grown then potted in a more nutritious soil and produced more vigorous new growth. However the new growth does not look etiolated being a nice dark green. If some plants have been grown slowly, in order to blur the old growth into more vigorous new growth, you have ...
by DaveW
Sun Mar 17, 2024 10:53 am
Forum: Cacti Identification
Topic: Copiapoa identification III
Replies: 2
Views: 124

Re: Copiapoa identification III

C. haseltoniana usually has yellowish/orange wool in the crown or areoles. As said previously it is hard to identify Copiapoa's whilst small.

http://www.llifle.com/Encyclopedia/CACT ... seltoniana

Maybe somebody who grows many from seed can help?
by DaveW
Sun Mar 17, 2024 10:45 am
Forum: Cacti Identification
Topic: Copiapoa identification
Replies: 1
Views: 98

Re: Copiapoa identification

The problem is Copiapoa's as young plants often look quite different to an older plant. http://www.llifle.com/Encyclopedia/CACTI/Family/Cactaceae/1380/Copiapoa_cinerea#:~:text=Description%3A%20Copiapoa%20cinerea%20is%20one%20of%20the%20most,solitary%2C%20or%20slowly%20offsetting%2C%20globular%20to%2...
by DaveW
Sun Mar 10, 2024 11:54 am
Forum: General
Topic: Pictures of cacti next to rocks in habitat
Replies: 8
Views: 441

Re: Pictures of cacti next to rocks in habitat

Some tuberous rooted cacti that grow among or under rocks or even shrubs have ev0lved an extreme form of etiolation to get their flowering heads above rocks etc for pollination. This modification is retained even if grown in pots when no rocks are present. https://bcss.org.uk/turbinicarpus-subterran...
by DaveW
Sun Mar 03, 2024 5:37 pm
Forum: General
Topic: Pictures of cacti next to rocks in habitat
Replies: 8
Views: 441

Re: Pictures of cacti next to rocks in habitat

I presume you are aware of these articles? https://link.springer.com/article/10.1007/s00442-007-0698-y https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0081513 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2701848/ https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2745...
by DaveW
Sat Mar 02, 2024 11:41 am
Forum: General
Topic: Pictures of cacti next to rocks in habitat
Replies: 8
Views: 441

Re: Pictures of cacti next to rocks in habitat

Just give me the usual picture credit and you can use what you want.

DaveW (Dave Whiteley)
by DaveW
Fri Mar 01, 2024 10:22 am
Forum: Books and References
Topic: Cactus & Succulent Review
Replies: 0
Views: 800

Cactus & Succulent Review

Latest edition of free to download Cactus & Succulent Review is available here:-

https://www.cactusandsucculentreview.org.uk/
by DaveW
Thu Feb 29, 2024 10:40 am
Forum: General
Topic: Pictures of cacti next to rocks in habitat
Replies: 8
Views: 441

Re: Pictures of cacti next to rocks in habitat

You can use any of my pictures I posted on my BCSS Travelogue. The later ones are habitat photos.

https://www.forum.bcss.org.uk/viewtopic.php?t=164681